Tri Star Music Together
Our Teachers
photo Mandy Wimmer-O'Brien

Mandy Wimmer-O'Brien has played piano, clarinet and sung since childhood. She has more than twenty years' experience teaching children, teens, and adults instrumental and choral music. Besides accompanying and singing in choirs, performing in bands and orchestras, and directing handbell ensembles at various times, Mandy also enjoys rehearsing and performing with community theater groups.


Mandy graduated with a degree in Interdisciplinary Studies (Music, Chemistry, and Political Science) from Millikin University. In April 2010, she successfully completed the Music Together® Teaching Workshop, developed by the Center for Music and Young Children in Princeton, NJ. In June 2012, Mandy was awarded Music Together Certification Level I status, having demonstrated outstanding achievement in teaching, musicianship, program philosophy, and parent education. Mandy also enjoys teaching piano to students of all ages and maintains a private piano studio.


After teaching Music Together for four years, Mandy decided to bring her love of family music making to the Petworth neighborhood by starting Tri Star Music Together! Tri Star Music Together celebrates five years of music making in Petworth in 2019! Mandy loves to sing and dance and thrives on making music and having lots of fun with her Music Together families!

photo Jess Glasser

Jess Glasser is a native of Brooklyn, New York. She holds a B.A. in German from Allegheny College in Pennsylvania, and a Masters of Social Work from the University of Hawaii. She danced ballet and tap as a child and is currently studying piano. She attended her first Music Together class in San Diego when her son was four months old and instantly fell in love with the research-based program, its philosophical approach, and all the musical tools she gained in her new parent toolbox. She completed the Music Together teacher training in October 2017 and is thrilled to be leading classes for Tri Star Music Together.

photo Diana Povolotskaya

Professional vocalist and music educator, Diana Povolotskaya graduated from the renowned Russian Ippolitov-Ivanov Music Conservatory in Moscow. She has performed in more than 20 countries around the world as soloist and chorister, most recently with the Grammy Award-winning American chorus True Concord of Arizona.

Diana first trained as a Music Together teacher more than 15 years ago, after colleagues noted her particular affinity for working with young children. She continued teaching young children music, developed drama and movement programs for children, and became a popular private voice and piano teacher for youngsters. She is dedicated to improving the lives of children by opening their worlds through music.

Diana currently serves as staff alto in the Schola choir of St. Matthew’s Cathedral in DC, one of the most highly regarded ensembles in the region. She continues to
work as cantorial soloist after serving on the staff of Congregation Chavarim of Arizona for seven years, where she also directed the education program for young congregants.