Music Faculty

LaCrosseTimothy LaCrosse

Fine Arts Department Co-Chair, Performing Arts
Director of Strings

Mr. LaCrosse holds his Bachelor of Music degree in viola performance from the Juilliard School. He spent a year at the Guildhall School of Music and Drama in London studying orchestral training before obtaining his Master of Music from the Yale School of Music. He previously served as principal violist of the National Symphony of Panama, as well as section positions in the Huntsville Symphony, the Hawaii Symphony, and Fairfax Symphony, among others. He has performed in many of the world's prestigious concert halls and festivals around the world, including Carnegie Hall, Avery Fisher Hall in Lincoln Center, Kennedy Center Concert Hall, Chicago Symphony Center, Ravinia Festival, Walt Disney Concert Hall (Los Angeles), Barbican Center and Aldeburgh Festival in England, Lucerne Concert Hall (Switzerland), Gasteig Cultural Center and Konzerthaus Berlin in Germany, Auditorium Parco della Musica in Italy, and the Sydney Opera House in Australia. An avid educator, Mr. LaCrosse maintains a private studio of violin and viola students and has prepared students for auditions to the National Symphony Orchestra Youth Fellowship Program and American Youth Philharmonic, both of which he is an alumna. He recently held the post of visiting professor of viola at the University of Panama, a position he held for four years. Recognizing the importance of arts education in public and private schools, he also performs and provides sectionals in Washington DC, Arlington and Fairfax County schools.

Ron Isaacson

Band 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, Mr. 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,” "My Fair Lady," and most recently, he guest-conducted Gilbert & Sullivan's "Ruddigore" in Rockville at the Victorian Lyric Opera Company's 6th "Sing-Out."

KlontzKyra Klontz

Choral Director

Ms. Klontz is thrilled to be the choral director at Bishop O'Connell High School. She is a native of Arlington and is excited to be back in the area. Ms. Klontz holds a Bachelor of Music in choral music education and vocal performance, as well as a double minor in special education and musical theatre from Miami University in Oxford, Ohio. She graduated summa cum laude with honors in December of 2017 and was awarded the "Outstanding Future Music Educator" honor for her graduating class. While at Miami, Ms. Klontz was extremely active in Best Buddies, becoming president and director of an inclusive choir on her campus, that integrated adults with and without disabilities. In addition, she participated in the MU Opera program each year, served as an undergraduate assistant and a student manager at the recreational center, and held leadership positions in two choral ensembles. Ms. Klontz was selected to be student conductor of the MU Chamber Singers her senior year, and went on to student teach at Mason High School and Maple Dale Elementary in Cincinnati, OH. After completing her student teaching, Ms. Klontz was most recently a long-term substitute in Arlington Public Schools, working as a choral director at Yorktown High School, Williamsburg Middle School, and Randolph Elementary School. Ms. Klontz helped prepare students for the District XII Assessment, where they received only superior or excellent ratings. She is active in the choral community, coming from a family of professional musicians and music educators.