Board of Directors

Sandra Betti, Executive Director; Youth Concert Coordinator
Janet Telford, Vice Chair
Barbara Fish, Treasurer
Barbara Broad, Secretary
Marguerite Close, Ads
John Carter, Publicity
Jennie Moiso, Historian
Ralph Retherford, Locals’ Concert Coordinator

Advisory Board

Craig Fleming, C.P.A.
David Ingram
Carl Rudolph
Janet Russell
Jeanne Wilhoit

Exec Director

Sandara BettiSandra Betti has played the flute since she was 9 years old. She has a Bachelor of Music degree in Flute Performance, and has studied with Paul Renzi, Principal Flutist with the San Francisco Symphony (now retired) and with Leone Buyse, Assistant Principal Flutist with the Boston Symphony Orchestra. Her first teacher was Angela Koregelos, whose father George Koregelos made the flute that Sandra is playing today. Sandra has performed with the Berkeley Symphony and the Artesian Pops Orchestra in Los Angeles. She has performed concert tours of Europe with classical guitarist Sergio Funes. In addition to playing the flute, Sandra has worked for several musical instrument manufacturers as a sales representative. She relocated to Sonora, and loves the area for both its natural beauty and its strong commitment to the arts. She is very active in the local music community, playing with several performing groups and chamber ensembles, and teaching private flute lessons to elementary and high school students. Like most musicians, Sandra got her start in music with a beginning band program at her local elementary school. She remains a strong advocate of public school music, and encourages anyone who enjoys hearing live music to support their local school music programs.

Vice Chair

Janet-TelfordJanet Telford lives in Soulsbyville. She studied flute with Katherine Fuller Sorensen, Paul Renzi and Susan Waller, and oboe with Lew Spratlan and Eldon Gatwood. She holds a Bachelor of Arts in Music Performance from San Francisco State University and a Master of Arts in Musicology from Penn State University. While living in Pennsylvania, she taught flute and oboe at the State College Music Academy and also taught at Penn State University and Bucknell University. She is a founder and former board president of the San Jose Chamber Music Society and the West Valley Symphony. She has been co-editor of Music for the Love of It, an international journal for amateur musicians, since its inception in 1987. In addition to performing in community orchestras and choruses and as a guest soloist, she also performs with numerous chamber music groups, including the Berkeley Bach Cantata Group and the Quorum Ventorum Woodwind Quintet. Ms. Telford plays and teaches flute, piccolo, oboe, oboe d’amore, and recorder.


Barbara Fish is a 31 year resident of Twain Harte. Upon retiring from a 42 year teaching career, she decided to follow her lifelong dream of studying music by enrolling in music classes at Columbia College, studying piano and voice with private teachers, singing with the Columbia College Community Chorus, the Groveland Pine Cone Singers, and most recently, the newly formed Central Sierra Threshold Choir as well as her church choir. She has sung with the American Opera and Musical Theater Festival Chorus in Logan, Utah, and Berkshire Choral International over the last three summers. She is a member of the National Association of Pastoral Musicians. Barbara and her husband, Phil, are parents of four children and grandparents of five. She is honored to be actively involved in supporting and promoting music endeavors in Tuolumne County.


Barbara-BroadBarbara Broad moved to Groveland in 1993 upon retirement from Stanford, where she worked with the design team for online administrative forms. For three years she was a contractor there to continue the training and evaluation programs. And then she decided life in Tuolumne County was too good to spend three days a week in Palo Alto. She does teach adult classes in Word, Excel, and PowerPoint at the Tuolumne County Superintendent of Schools office. She chairs GAINs, a community collaborative, and also sits on the boards for Sierra Nonprofit Services and the Columbia College Community Chorus. Barbara started piano lessons at age 6 and accompanied choruses in junior high and high schools. Her college degree is from Occidental College in Los Angeles, with a major in music, emphasis in choral conducting, studying under Howard Swan. Her first ‘real’ job was in the president’s office at Columbia Records in New York City. Then she moved to England for a secretarial job with the Air Force, where she met and married a fighter pilot. The next decades were spent raising four children. In 1990 she earned her M.B.A. in Information Systems and then three years later retired. She continues her musical interest with the Bach Festival, by singing with the Columbia College Community Chorus, and at voice classes at the college with John Carter. She also attends summer chorus music retreats in Massachusetts and Washington State.


Jennie Moiso has been active in the Columbia College Community Chorus since coming to Sonora in late 1980. She joined the Bach Festival Board several years ago and has served in the important capacity of Secretary. She now the Historian for the group.


John Carter has organized and publicized many musical events through his work in at the college including hosting A Festival of Singing featuring local school choirs, The California Community Chorus Festival, and The Mother Lode Community Chorus Festival. He has been actively involved with publicity for The Sonora Bach Festival, The Tuolumne County Arts Alliance, and formerly The National Association of Singing/San Joaquin Chapter. As a tenor/conductor, John has performed extensively in the Central Mother Lode. For thirty years he taught vocal and choral music at Columbia College — retiring in 2014. While at the college he conducted choirs — including the Columbia College Community Chorus and taught many vocal students, During this time he received from the school Teacher of the Year Award, twice, The Community Service Award, and was elected to Who’s Who numerous times. He has served on the boards of the American Choral Directors Association/California and National Association of Teacher’s of Singing/San Joaquin Chapter. He holds music degrees from Chapman University, Westminster Choir College and a certificate from Temple University.

Program Editor/Advertisement Coordinator

Marguerite Close brings her extensive background and many years as an executive secretary in the banking industry and the legal field to the Sonora Bach Festival Board. In addition, Marguerite is an active singer, dance fitness instructor and holds a black belt in NIA (Neuromuscular Integrative Action).

Locals’ Concert Coordinator

Ralph-RetherfordRalph Retherford, M.D. was raised in a musical family, his mom being a concert violinist and his brother a violist. By ten years old he was studying the cello, and singing and acting in a city boy’s choir and a theater guild in Madison, Wisconsin. In later years, he toured Europe with a university glee club and performed with the California Youth Symphony. Locally he sings with the Sonora Master Chorale and plays cello, solo and in ensemble. He’s also performed with local groups singing and picking mandolin, banjo and guitar. His talent and experiences jell in his original songs which tell of his love of the mountains, the desert and the fairer sex. His tune, “Dozer Man” prompted him in 1983 to leave his Carmel Valley medical practice and do a national radio station/ performance circuit to promote the song onto the Billboard charts. Quite a “Dozer Man” himself he presently runs a private, medical practice, directs medical services at Maynard’s and serves on the T.U.D.


John Carter, tenor, has performed frequently in the Mother Lode and Central Valley regions of California. As a tenor soloist, John has sung the music of Bach, Handel, Mozart, Hayden, Schubert, Beethoven and Faure in various venues including the St. James Concert Series (Sonora),the Sonora Bach Festival, the Modesto Masterworks Chorus, Widener College Chamber Music Series (Pennsylvania), The Modesto Junior College Opera Theatre, The Sonora Opera Guild, and the Columbia College Community Chorus. He has also performed regularly in churches in many communities. He began his musical training in the Modesto City Schools system. Since then he has earned degrees from Chapman University and Westminster Choir College and a Certificate in Vocal Performance in the Professional Studies Program at Temple University in Philadelphia. He is a professor at Columbia College in Sonora where he conducts and teaches vocal classes.