There are two main orchestras at Sevenoaks; the Foundation Orchestra and the Symphony Orchestra.
- The Foundation Orchestra is for years 7-9, and all students who play an orchestral instrument are encouraged to join. This enables them to all learn from each other, as well as develop individually.
- The Symphony Orchestra is the more senior orchestra in the school, and provides a hugely rewarding environment for students to hone their orchestral skills.
Additional groups include The Sevenoaks Strings and the Sevenoaks School Wind Band. These are smaller ensemble groups for string and wind instruments respectively and are aimed primarily at middle school students.