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Lillian Manis  |  Acting President  |  email

Dr. Lisa M. Zweben  |  Past President

Lily Burton  |  Secretary


Dr. Sharon Eng  |  Treasurer


Diane Chaplin  |  Webmaster & ASTACAP Chair

Krista DeBolt  |  Southern OR regional rep; Membership

Dr. Lisa Robertson  |  Chorda Editor & Eastern OR rep

Kristi Stingle | Northwest OR regional representative


Dr. Tomas Cotik 

Dr. Valdine Ritchie Mishkin  

Oregon ASTA 2023-2024 Board

Screen Shot 2021-12-02 at

Some of the OR-ASTA board members with guest artist Soon Hee Newbold,

at the bi-annual conference, October 2021

Lisa photo.jpg
Lily Burton Secretary.jpg
Sharon Eng Treasurer.jpg
Diane Chaplin Membership.jpg


Lillian Manis, Acting President

Widely recognized for her work as a Suzuki educator, Lillie Manis is currently completing her doctorate at Teachers College, Columbia University, where her research focuses on studio teachers' holistic strategies for cultivating expressive performance in young violinists. She is a faculty member at the Willamette Violin Academy, teaching students of all levels — from preschool-aged beginners to concerto-level high schoolers — in both individual lessons and groups. From 2009-2020, she was a faculty member at the University of Oregon School of Music and Dance, where she mentored graduate violin and viola pedagogy students, served as the Assistant Director of the Community Music Institute, and taught courses within the music education department. Members of her vibrant pre-college studio and her graduate student mentees have achieved noteworthy musical and professional success, including competition wins, full scholarships to major music schools and summer programs, and college teaching appointments. Active as a clinician, masterclass presenter, adjudicator and conference presenter at both the regional and national levels, she enjoys performing chamber music alongside some of the northwest's finest players, and recently completed a term of service on the editorial committee of the American String Teacher magazine. 

Dr. M. Lisa Zweben, Past President

A native of Washington D.C., Lisa is a professional violinist and violist, teacher and conductor. She  earned a Bachelor of Fine Arts in Violin Performance from SUNY, College at Purchase, and earned an MM in Violin Performance and Doctor of Musical Arts in Viola Performance from the University of Miami in Coral Gables, Florida. Following studies with principal teachers Charles and Heidi Castleman, Carol Sindell, and Thomas Moore, Lisa has been a member of many orchestras including the Royal Opera of Ghent, Belgium, the Naples Philharmonic in Naples, Florida, and the Miami City Ballet. Prior to moving back to Portland in August 2010, Lisa lived in Virginia for fifteen years and was active both as a performer and teacher, teaching a full studio of violin students and coaching chamber music coach at Washington and Lee University, serving as an instructor on the faculty of Virginia Tech in Women’s Studies, performing as Assistant Principal viola of the Roanoke Symphony and Principal Viola of Opera Roanoke, in addition to maintaining a studio of private violin and viola students. She is currently the principal viola of the Corvallis OSU Symphony, concertmaster of the Corvallis Repertory Singers orchestra, conducts an amateur string orchestra, and teaches privately. Lisa has been an ASTA member since 1986 and has been a member of the ORASTA board since 2014.

Lily Burton, Secretary

Lily Burton received degrees in violin performance from the University of Cincinnati and the Cleveland Institute of Music. She is a former member of the Atlanta Symphony, Honolulu Symphony, and San Francisco Ballet Orchestra. Her passion for teaching began in Corvallis, Oregon, where she was an Elementary Strings instructor in the public schools. Since moving to the Portland area in 2006, she has performed often with the Oregon Symphony and is concertmaster of both Portland Chamber Orchestra and the Portland Festival Symphony. She also plays chamber music with Waters Chamber Players. She remains a devoted teacher who thoroughly enjoys her studio of violin students.

Sharon Eng, Treasurer

Violist Sharon Eng has performed worldwide with her trio, Classical Nuances (oboe, viola, piano) for more than 20 years on five continents. While studying for her bachelors and masters in viola performance at the Juilliard School in New York City, she played in the American Ballet Theatre and NYC Opera orchestras. Professionally, Dr. Eng toured China twice as co-principal viola of the Polish Sinfonietta, maintains a private violin studio in Portland, is on the strings faculty of Portland Parks and Recreation, co-founded Madrona Viola Duo and the Raphael Spiro String Quartet, and is president of the Oregon Viola Society. She freelances with many local ensembles, among them-- Oregon Coast Music Festival, Portland Opera, Portland Symphonic Choir, Newport, Rogue Valley, Corvallis and Vancouver Symphony Orchestras. Since 2003, Dr. Eng has served on the summer faculty of the Intermuse lnternational Music Institute and Festival (IIMIF) at Mount St. Mary's Univ. in Emmitsburg, Maryland ( Eng has been a member of ASTA for over 40 years and is currently treasurer of the Oregon Chapter of the American Strings Teacher Association. Her board qualifications include a doctorate (PhD) in international nonprofit management and 25 years as a development aid specialist managing USAID, Asian Development Bank and Australian AID projects ranging in grants of $25,000 to $8 million. Dr. Eng is currently adjunct associate professor on the Faculty of Business, Government and Law at the University of Canberra in Australia (

Diane Chaplin, ASTACAP Chair & Webmaster

Diane Chaplin is a solo artist, chamber music cellist and nurturing music educator who lives Portland, Oregon. She tours around the U.S. as a featured member of the Portland Cello Project, and is often heard in solo and chamber music performances across the globe. She has a large class of private students, both in-person and online, and teaches online classes to an international clientele through Cello RefineryDiane has taught at Yale University, Bard College, Oberlin Conservatory, Linfield University, Lewis and Clark College, Swarthmore College and at the Castleman Quartet Program, and has given master classes in the U.S., Canada, Mexico, The Netherlands, Bosnia and Russia. As a member of the Colorado Quartet for twenty years, Diane performed in more than twenty countries and recorded several critically acclaimed albums. The Quartet was the first all-female string quartet to perform the complete quartets of Beethoven in both North America and Europe. Diane holds a BFA degree from the California Institute of the Arts and a Master of Music degree from The Juilliard School. She received a Special Prize from the International Cello Competition in Viña del Mar, Chile, and a Certificate from the International Tchaikovsky Competition in Moscow. She is a member of the National ASTACAP committee. (

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