Music Faculty

Ron Isaacson

Instrumental Music Director

Mr. Isaacson comes to O’Connell as a trombonist/low brass specialist, an instrumental conductor and a music educator. He earned a Bachelor of Music in music education from the Crane School of Music, SUNY-Potsdam, in 1983 and earned his master’s degree from George Washington University in 1998.

As a music educator, Isaacson has taught at schools in the Washington metropolitan area and in New Hampshire. He has also directed school and community musical theater productions, including "Annie,” "Once on This Island,” "Pirates of Penzance,” “The Adventures of Mr. Toad,” and "My Fair Lady.”

Peter Kadeli

Choral Director

Mr. Kadeli, a native of Falls Church Virginia, holds a Bachelor of Music degree in choral education and music composition from the George Mason University School of Music in Fairfax, VA. While at Mason, he studied conducting with the National Philharmonic Chorale director, Dr. Stan Engebretson, and Laban movement theory specialist, Dr. Lisa Billingham. In addition to his choral studies, he studied composition with American composer, Mark Camphouse, and piano with Dr. John Healey. Following his studies at Mason, Mr. Kadeli served as the choral director at Trinity School at Meadow View where he taught music theory and directed five high school choruses. In the summer of 2013 he pursued conducting studies in Freidburg, Germany, with renowned European conductor Volker Hempfling.

Mr. Kadeli’s compositions have been performed in the United States and abroad in Europe. Locally, the GMU Chorale, Modern Music Ensemble, Fredericksburg Chamber Chorale, W.T. Woodson High School Chorale, and Trinity School at Meadow View Chorale have performed his choral works. In the summer of 2014 he conducted the National Philharmonic Chorus in a premiere of his composition “Veni Sancte Spiritus” throughout Vienna, Salzburg, and Prague. In addition to his work at Bishop O’Connell High School, Mr. Kadeli enjoys directing the contemporary choirs at the Saint Robert Bellarmine Chapel in Fairfax.