Music is an essential part of the education of a significant number of boys in Years 9 to 12. They are offered a wide range of performing experiences from symphonies by Mahler to string quartets by Mozart, masses by Palestrina to musicals by Bernstein and marches by Sousa to the jazz of Ellington.

Internationally recognised music is a feature of the School’s performances. In recent years the School Choir has joined with Melbourne Girls Grammar for performances of the Faure Requiem, the Chapel Choir has performed with The Australian Brandenburg Orchestra and the Jazz Ensembles present two evenings of jazz every year. The Symphonic Wind Ensemble explores diversity from the traditional repertoire to the avant garde, and the String Orchestra has played Vivaldi's The Four Seasons. The Symphony Orchestra performs works including The Planets by Holst and Beethoven's Symphony No 5.

Orchestral tours are undertaken on alternate years. The Symphony Orchestra has performed in St Giles' Cathedral in Edinburgh, the Royal Academy of Music in London, the Forbidden City Concert Hall in Beijing and the Teatro Goldoni in Venice. In 2010 the orchestra toured Japan, which included a concert in the prestigious Okuma Auditorium.

International soloists often appear with the Symphony Orchestra. Leslie Howard has performed with the orchestra three times between 1991 and 2006; the most memorable probably the performance of the Liszt's Piano Concerto No 2 in the Royal Academy of Music in London. In 2009 the orchestra accompanied trumpeter James Morrison in an evening of orchestral jazz including Gershwin’s Rhapsody in Blue with 2010 Captain of Music, Daniel Le, as piano soloist.