Angelika Machnik-Jones - cello, chamber music,

musicianship program, Founder and Director of OCM

Dr. Marat Gabdullin - violin

Angelica Pereira - violin

Elizabeth Venegas - violin

Shaohong (Betty) Yuan - violin, viola

Dr. Christine Craddock - double bass

Ruirui Ouyang Johnson - piano, staff accompanist

Jaehee Kim - piano, staff accompanist

Dr. Gloria Tham-Haines - piano, staff accompanist

Chelsea Bushong - harp





Honored for her “excellent musical instincts”, “great emotion, sensitivity, temperament” and “wonderfully committed playing”, Polish cellist Angelika Machnik – Jones has performed extensively as a recitalist, soloist and chamber musician throughout Poland, Germany and United States. As a soloist, she has performed with Delta Symphony Orchestra, Eastern Music Festival Symphony Orchestra, Oklahoma City University Symphony Orchestra, Oklahoma Community Orchestra, University of Oklahoma Civic Orchestra, University of Oklahoma Symphony Orchestra, Fort Smith Symphony and Fort Hays Symphony Orchestra. She has appeared in several music festivals including Lancut International Music Festival, National Orchestral Institute, Eastern Music Festival, Texas Music Festival and Mimir Chamber Music Festival. Mrs. Machnik-Jones performed on OETA - a local Oklahoma PBS television station and recently her performance was featured in the FOX 25 News. She was also featured in Daily Oklahoman, Greensboro News, Jonesboro Sun and the City Wire in Fort Smith.

 Angelika won several prizes both in Poland and United States. In Poland, she received the Fourth Prize in Bacewicz International Chamber Music Competition, playing with Pratum Trio. Since moving to United States, she received the First Prize in Delta Symphony Concerto Competition, Third Prize in Gordon Parks Concerto Competition. She was a winner of Eastern Music Festival Concerto Competition and Oklahoma City University Concerto Competition.  Angelika also received Second Prize in Crescendo Music Awards and the First Prize in Oklahoma Community Orchestra Concerto Competition. While in Dallas, she was the First Prize winner in Hubbard Solo and Chamber Music Competition.

Mrs. Machnik-Jones holds degrees from Oklahoma City University and Southern Methodist University. Her primary teachers include Jadwiga Ewald, Tomasz Zieba, Andres Diaz and Dr. Jonathan Ruck. She also took lessons with Matt Haimovitz, Christopher Adkins, Robert deMaine, Ko Iwasaki, Brinton Smith, Tomasz Strahl and Claus Reichart.

Mrs. Machnik – Jones began her cello studies at the age of nine in the Oginski Music School in Poland. From there she went to study with a famous Polish pedagogue Jadwiga Ewald in the High School of Music in Gdansk. After graduating, Angelika entered the Moniuszko Academy of Music. One year later she received a full scholarship to study at Oklahoma City University with Tomasz Zieba. She graduated from this university in 2007, receiving a Bachelors Degree in Cello Performance. That same year she received a full scholarship from Southern Methodist University in Dallas, Texas, and began her studies with the world–renowned cellist Andres Diaz. She graduated in 2009, receiving a Masters in Cello Performance.

Her past orchestral experience includes Abilene Philharmonic, Fort Smith Symphony Orchestra, Irving Symphony Orchestra, Plano Symphony Orchestra, Las Colinas Symphony Orchestra, National Orchestral Institute Orchestra, Eastern Music Festival Orchestra (principal cello) and Texas Music Festival Orchestra (principal cello).

Mrs. Machnik – Jones currently resides in Oklahoma City with her husband Dustin Jones. She plays with Oklahoma City Philharmonic, Fort Smith Symphony, Lawton Philharmonic and she is working on her Doctorate of Musical Arts degree at the University of Oklahoma.

In addition to performing, Angelika Machnik-Jones is also a passionate and committed pedagogue. She is the founder and director of Oklahoma Conservatory of Music, where she teaches cello, chamber music and musicianship classes. She is also a part of OKC Cello Project, a student cello ensemble, mentored by the members of the Oklahoma City Philharmonic cello section and cello teachers from the Oklahoma City area. Her past teaching experience includes Eastern Music Festival and University of Oklahoma Summer Strings Camp.


Dr. Marat Gabdullin

Marat Gabdullin, native of Russia, is currently the Associate Concertmaster at Oklahoma City Philharmonic, a member of Lawton Philharmonic and Norman Philharmonic. He holds his Doctoral Degree from University of Oklahoma and Master's Degree from Oklahoma City University.

Dr. Gabullin began studying violin at the age of five. At age seven he was the soloist in a performance of the Vivaldi Violin Concerto in a minor with the Ufa Chamber Orchestra in Russia. After studying at the Specialized Music Schools of Ufa and Kazan, Dr. Gabdullin graduated from the Ufa State Academy of Art. In 2007 he moved to US.

Dr. Gabdullin has won prizes at such competitions as The III All-Russian competition for violinists (Tver, Russia 1994), The M.Fain Republic competition (Ufa, Russia 1999), The IV N.Sabitov Open competition (Ufa, Russia 2000), The All-Russian competition among Music Schools “Young Talents” (Ufa, Russia 2001), The IV International competition “Symphonia” (Volgograd, Russia 2002), The VII International competition “Hopes, Talents & Masters” (Dobrich, Bulgary 2003), The III “Delphic Games” of Russia (Volgograd, Russia 2003), The II “Delphic Games” of countries of CIS (Kishinev, Moldova 2004), The IV International violin competition “DeMUKS” (Yekaterinburg, Russia 2006. In the US, Marat Gabdullin has won ESO Mendelssohn Concerto Competition (2009), OCO Concerto Competition (2009) and OU Concerto Competition (2010).


angelica pereira

Colombian violinist Angelica Pereira, is currently a member of Oklahoma City Philharmonic, violin instructor at El Sistema Oklahoma and Oklahoma Conservatory of Music. She holds her undergraduate and graduate music performance degrees from Oklahoma City University.

She is a winner of many music competitions, including 1st (2010) and 2nd (2009) prize in Ladies Music Club of Oklahoma City Competition, Oklahoma Community Orchestra Concerto Competition and Oklahoma City University Concerto Competition.

 Her other awards include "Jóvenes Talentos-ICETEX" (2008), Patti Johnson Wilson Foundation Scholarship (2011), President Honor Roll at OCU, "Who's Who Among Students in American Universities and Colleges" (2010-2011-2012), and St. Luke’s Foundation Bob & Helen Jo Hendrick OCU Scholarship (2016). 

Mrs. Pereira has participated in master classes with Midori, Philippe Quint, Paul Kantor, Corey Cerovsek.  In the summer of 2010 she took over as concertmaster and was awarded Outstanding Orchestra Member at Opera in the Ozarks in Eureka Springs, AR. Angelica also participated in Youth Orchestra of the Americas, and between 2011 and 2013 toured with that orchestra throughout Mexico, China and Central America.

elizabeth venegas

Elizabeth is a native Oklahoman, who began studying violin at the age of four. In 6th grade, she was the Overall Winner of the Keith String Competition, and in high school she was the Violin Division Winner of the Buttram competition in 2005 and 2007. She received her Bachelors of Science in Music Performance from Southern Nazarene University in Bethany, Oklahoma, studying principally with Densi Rushing. Mrs. Venegas’ awards include a full ride scholarship, the Edwards Family Music Scholarship, the Roger & Ann Strong String Endowment, and the Robert Hale String Emphasis Endowment, graduating Magna Cum Laude. She completed her Masters in Music Performance from Oklahoma City University, studying principally with John Arnold, and Dr. Sophia Ro. She was awarded through audition the second violin position of the resident graduate string quartet – Rigel String Quartet, receiving a full tuition scholarship, and graduated with honors. Artists and teachers that she has performed for include Midori, Rachael Barton Pine, Mimi Zweig, Daniel Asia, Sonja Foster, and more.

Elizabeth specializes in being an ensemble instrumentalist. As a creative violinist she has performed as a part of many different ensembles of various genres, churches, recording studios, movie soundtracks, and more. She has also been sought after by many composers and composition students for premieres and recordings of new music. Currently she is a section  violinist for the Tulsa Symphony, Lawton Philharmonic, Fort Smith Symphony, and the Arkansas Symphony Orchestra.

Shaohong (Betty) yuan

Betty Yuan is a Chinese violist, currently performing with Oklahoma City Philharmonic. She is a doctoral candidate at University of Oklahoma, studying with Dr. Mark Neumann, and a member of the Crouse String Quartet. In the summer 2016, together with the Crouse Quartet, she performed concerts in Arezzo, Italy.

Betty has previously performed with the Central Opera Theatre Symphony Orchestra and the Shenzhen Symphony Orchestra. She has performed on masterclasses for Tokyo String Quartet, Chiara String Quartet, Avalon String Quartet and Miro String Quartet. Betty holds her Bachelor's Degree in Viola Performance from Remnin University of China, and her Master's Degree in Viola Performance from University of Oklahoma. She is an active performer with many local ensembles. She is a passionate chamber musician and a teacher.


Dr. Christine Craddock

Christine Craddock performs extensively on the double bass as a soloist and ensemble member, and has performed in ensembles and music festivals across the United States. She has also won fellowships to attend the Marrowstone Music Festival in Seattle (2012) and the Texas Music Festival in Houston (2013). Currently she plays with the Oklahoma City Philharmonic, Norman Philharmonic, Symphony of Northwest Arkansas and the Midland-Odessa Symphony and Chorale, where she serves as Associate Principal bassist.

Christine has studied double bass with Jeff Bradetich, Diana Gannett, and Anthony Stoops, and holds performance degrees from the University of Michigan and the University of Oklahoma.  She has been the double bass instructor with the Sooner Strings Project in Norman since 2011, and in 2012 she held the position of interim double bass faculty at the University of Oklahoma.  In 2012 she also coached the OU double bass all-state workshop.  Since 2014 she has been assistant faculty member of the Oklahoma Bass Bash.


Ruirui Ouyang Johnson

Ruirui Ouyang Johnson is a native of Tianjin, China.  She received her undergraduate degree in piano performance at the Tianjin Conservatory of Music in 2002 under the supervision of Alexey Sokolov and Svetlana Sokolova.  For several years thereafter, she taught piano at the Tianjin Conservatory.  In 2008, she first came to Oklahoma City for advanced music studies, where she received her MM with honors in Piano Performance at Oklahoma City University in 2011 under the supervision of Dr. Sergio Monteiro.  After serving as a piano teacher in and around Macau, China for three years, Ruirui returned to the United States for her doctoral studies.  After a year of study with Dr. Kevin Chance at the University of Alabama, she transferred to the University of Oklahoma in the fall of 2015, where she is completing her work towards a D.M.A. in Piano Performance with Dr. Jeongwon Ham and Dr. Edward Gates.

Since returning to the United States in 2014, Ruirui has won six piano competitions: (a) the Donna Turner Smith Memorial Piano Competition at OU in March 2018; (b) the Piano Four Hands Artist Division of the 4th United States Virtuoso Artists International Piano Competition in February 2018; (c) the University of Oklahoma Concerto Competition in December 2015, which led to her performance of Rachmaninoff’s Second Piano Concerto, Movement I with the OU Symphony Orchestra on March 31, 2016; (d) the Alabama Music Teachers’ Association Concerto Competition and (e) the University of Alabama Concerto Competition, which competition victories jointly led to her performance of Tchaikovsky’s First Piano Concerto with the University of Alabama Symphony Orchestra in 2014; and (f) the Piano Solo Competition of the Alabama Music Teachers’ Association in April 2015, which led to a piano solo recital sponsored by the AMTA.  In 2017, she was selected to be a member of the Brightmusic Chamber Ensemble, Oklahoma City’s residential chamber music group, with which she has already performed both regular season and festival concerts.  In July 2017 she was the senior participant in Klavierfestival Lindlar 2017, an annual international piano festival held in Lindlar, Germany, where she gave recitals in Lindlar and Gummersbach, near Cologne, including the capstone appearance at the final concert of the Festival. 

Ruirui served as the pianist and assistant conductor of the University of Alabama Opera Theatre, as well as a vocal coach.  Her piano teaching in Macau, Tianjin and Zhuhai, China led to several teaching awards, including the Liszt Memorial Prize for Excellence in Teaching at the Hong Kong International Piano Open Competition.  She has served as a vocal and instrumental accompanist in the United States and China; a piano competition judge in China and the United States; and a church pianist and organist at the First Christian Church in Stroud, Oklahoma.

Dr. gloria tham-haines

Dr. Gloria Tham-Haines is a Nationally Certified Teacher of Music and a member of the Music Teachers National Association. She has taught privately for 18 years and loves working with students of all ages and abilities.

Born in Kampar, Malaysia, Dr. Tham-Haines started piano lessons at age five. She completed the exam syllabus of the ABRSM up to Grade 8 and earned the Perfomer’s Certificate of Trinity College, London. In 1998, she moved to the USA to begin her tertiary studies. She holds piano performance degrees from Southwestern College, Winfield, KS and Wichita State University, KS. In August 2009, she graduated with a doctorate in piano performance from the University of Alabama, Tuscaloosa. Her research and performance interests are in Chinese piano music and Orientalism in Western piano literature.

Beginning in the fall of 2016, Dr. Tham-Haines will be an adjunct instructor at Oklahoma City Community College. Previously, she has taught at Cowley County Community College in Arkansas City, KS; Southwestern Christian University, Bethany, OK; and the University of Central Oklahoma. Besides piano courses, she has taught aural skills, music appreciation, world music, music theory, aural skills, and music ministry courses. Most recently, she was invited by the Walnut Valley Music Teachers Association to be the guest clinician and conductor for their piano ensemble festival in April 2016.

Besides teaching, she is also involved in music ministry, accompanying, performing, and adjudicating. She has been a church pianist since she was in grade school. She collaborates with the Mustang High School Choirs on a regular basis. She is also a part of the ergonomically-sized smaller piano keyboard international initiative. She is a private owner of a DS 5.5 Steinbuhler keyboard fitted in a Kawai grand. She has volunteered, performed and presented lectures in Thailand, China, Singapore, and Malaysia.

In addition to music, she is an active contra and ballroom dancer, enjoys photography, reading, and traveling. Dr. Tham-Haines is married to Patrick and has two children and a Siamese cat. 

Chelsea Bushong

While in high school, Chelsea Bushong started her professional performing career playing many weddings and background events.  Chelsea graduated magna cum laude with a Bachelor of Music in harp performance from Oklahoma City University.  During college, Chelsea began her private harp studio and was hired to perform with many different orchestras including the Ft. Smith Symphony, Tulsa Symphony, and the Enid Symphony.  She has also played substitute principal harp for the Oklahoma City Philharmonic Orchestra.  Chelsea graduated summa cum laude with her Masters of Music degree at University of Central Oklahoma in harp performance.  Chelsea is now the harp professor at University of Central Oklahoma, and enjoys watching her university program as well as her private studio grow in numbers and proficiency.