The Instrumental Music Program runs a number of after school hours extension ensembles for public school students.
- Primary Concert Bands - Year 6 students enrolled in IMP classes
- Junior Concert Band - Year 7 & 8 students in ACT public high schools
- Senior Concert Band - Year 9 - 12 students in ACT public high schools and colleges
- Senior Jazz Band - drawn from ACT Senior Concert Band students
- Percussion Ensemble - Year 7 - 12 students in ACT public high schools and colleges
- Flute Ensemble - Pop up ensemble as required through concert bands
- Primary Concert Choir - Year 4 - 6 students in ACT public primary schools
- Senior Concert Choir - Year 7 - 12 students in ACT public high schools and colleges
- String Ensemble - Year 4 - 6 students in ACT public primary schools