FACULTY     Staff     Board of Directors

Troy Peters, Music Director

Troy Peters has been Music Director of YOSA (Youth Orchestras of San Antonio) since 2009. He has guest conducted many orchestras, including the Oregon Symphony, San Antonio Symphony, Vermont Symphony Orchestra, and Vermont Mozart Festival. He was previously Music Director of the Vermont Youth Orchestra and Montpelier Chamber Orchestra, and conducted college orchestras at Texas State University and Middlebury College. He has also gained international attention for his orchestral collaborations with rock musicians, including Blind Pilot, Jon Anderson (of the band Yes), and Trey Anastasio (of the band Phish), with whom he worked on two albums on Elktra Records.

Andy Post, YOSA Symphonic Winds Conductor

Andy Post directed bands at Wood, Jackson, and Lopez middle schools in North East ISD and is an active consultant, clinician, and adjudicator. He has earned Teacher of the Year, Trinity Prize Distinguished Educator Award for NEISD, Who’s Who of American Teachers, PTA Lifetime Award, and was nominated for Disney National Teacher of the Year. His ensembles consistently earn Sweepstakes Awards at UIL and have been recognized at the Region, Area, and State level by Texas Music Educators Association (TMEA) and nationally by Choice Music National Wind Band Competition.

Kenneth Freudigman, YOSA Symphony & YOSA Concertino Strings Conductor

Kenneth Freudigman is the co-founder and artistic director of Camerata San Antonio, principal cello of the San Antonio Symphony, adjunct professor of cello at the University of Texas at San Antonio, former Education Director of the Cactus Pear Music Festival, and a highly respected cello pedagogue. Ken began his work as YOSA Symphony conductor in 2012.

Dr. Kristin Hayes, YOSA Flute Choir Conductor

In addition to serving as Director of the YOSA Flute Choir, Dr. Kristin Hayes currently teaches flute and music theory at St. Mary’s University and Our Lady of the Lake University. She formerly held teaching positions at University of Texas San Antonio and Florida State University. During the summer, she teaches and performs at Blue Lake Fine Arts Camp and UTSA’s annual Flute Camp. An active performer and clinician, Dr. Hayes has performed and presented at various festivals and conventions, including the National Flute Association Convention, MTNA National Convention, Mid-South Flute Festival, and the Florida Flute Association Convention. She has also performed and held masterclasses at various institutions throughout North and Central America, and she frequently serves as adjudicator for local, state, regional, and national competitions.

Karen George, YOSA Repertory Strings Conductor

Karen George is the orchestra director at Johnson High School in San Antonio. Mrs. George studied violin at the University of Southern Mississippi with Stephen Redfield where she earned bachelor degrees in both Violin Performance and Music Education. She then attended University of Texas at Austin where she studied violin under Vincent Frittelli and received a Masters in Music Education with a minor in conducting. Mrs. George has also toured with several orchestras in Europe including the American Institute for Musical Studies (AIMS) in Graz, Austria. In addition to her teaching job, she also performs in the Corpus Christi Symphony. Mrs. George opened Johnson High School in 2008. Since then, her four orchestras have had successes at UIL with numerous Sweepstakes trophies. The Johnson orchestras have traveled to Europe and Hawaii to perform in various venues. Johnson full orchestra has made it to the finals for Honor Orchestra competition at TMEA three times and they made the finals for string in 2013. Recently, the Johnson Varsity orchestra was invited to perform at Midwest in Chicago this December. Mrs. George is married, has two beautiful daughters and a whippet.

Brenda Johnson, YOSA Sinfonietta Strings Conductor

Brenda Johnson is the orchestra director at O’Connor High School (Northside ISD) and has been with YOSA for two years. Prior to her current position, Mrs. Johnson taught for 10 years in Plano and the next 7 years at Hector Garcia MS in Northside ISD. For many consecutive years, Mrs. Johnson has received Sweepstakes ratings at UIL Concert/Sight-reading. In its first year as a brand new school, the Garcia MS Chamber Orchestra received fourth place in the TMEA Honor Orchestra competition under the direction of Mrs. Johnson. Originally from McAllen, Texas, Mrs. Johnson received her Bachelor of Music Education degree from Baylor University and a Master’s degree in Curriculum and Instruction from the University of North Texas. In 2004, Mrs. Johnson was one of four teachers in Texas to receive the Marjorie Keller Young Music Educator Award from the American String Teacher Association.  During her time in Plano, she received Teacher of the Year for Bowman Middle School in 2009. She then received the Educator of the Year award for Hector Garcia MS in 2016. Most recently, she was among 19 San Antonio area teachers to receive the ExCEL Award from Kens5 and the San Antonio Credit Union.  She has served as secretary and treasurer for TexASTA and is a member of Texas Music Educator’s Association, Texas Orchestra Directors Association, Texas Music Adjudicators Association, and the American String Teacher Association with National School Orchestra. 

Martin Sanchez, YOSA Capriccio Strings Conductor

Martin Sanchez is the orchestra director at Ed White Middle School in the North East Independent School District. His ensembles at Ed White have earned Sweepstakes awards at UIL contest. Mr. Sanchez is from San Antonio, Texas and received his Bachelor of Music in Music Education at the University of Texas at San Antonio in the fall of 2013. Before holding the job of director at Ed White, he held the Assistant Director position for several years in the UTSA String Project, a program to help university students hone their skills in string teaching. In 2013, He accepted the Lead Teaching Artist position for the YOSA Mas Program in the Edgewood Independent School District. He has also been involved with the YOSA Summer Symphony Camp for several years. Mr. Sanchez is a member of the Texas Music Educator’s Association and Texas Orchestra Directors Association.

Jacobi Caldwell, YOSA Prelude Strings Conductor

Jacobi Caldwell, Conductor of YOSA Prelude Strings, earned her bachelor of Music, String Emphasis, from the University of South Carolina. She studied conducting with David Rudge and participated in the USC Conductor’s Institute. She worked with the South Carolina Philharmonic Youth Orchestra and the USC String Project. Following that, she taught in public schools, then spent years performing commercially. One of the highlights of her journey was moving to Texas and working with the Hill Country Youth Orchestra. She has gone on to teach at Kerrville ISD and Alamo Heights ISD winning UIL Sweepstakes at every competition. She is currently teaching in Boerne ISD.

Eugene Dowdy, Resident Conductor

Eugene Dowdy is an associate professor at the University of Texas at San Antonio where he is Director of Orchestral Studies, conductor of the UTSA Orchestra and Lyric Theatre, and head of instrumental conducting. Dr. Dowdy conducted YOSA’s Symphony Orchestra from 1984 to 1992 and was Interim Philharmonic Conductor in 2000. He researched and wrote YOSA’s history for his doctoral essay at the University of Iowa in 1995. He also serves as associate conductor for the Symphony of the Hills (Kerrville), and is the founding director of the UTSA String Project. He is a past president of TODA and TexASTA.