Hart House Symphonic Band (HHSB) is a wind orchestra, with woodwind, brass, and percussion sections, based at Hart House at the University of Toronto.
HHSB is historically noteworthy as the first symphonic band to have instruments in which the initial sound-producing mechanisms of the instruments cover all three states of matter: solid, liquid, and gas. While other orchestras have three categories of instruments (strings, percussion, and wind), two of these categories (strings and percussion) use matter in its solid state, and one category (wind instruments) uses matter in its gaseous state. HHSB is, in some sense, the first large symphonic orchestra to use hydraulophones, musical instruments that produce the initial sound by way of matter in its liquid state.
The 2007 Spring Concert, including Janzen's Suite for Hydraulophone, Movement II, was also webcast live by six "cyborgloggers" using wearable computers, underwater cameras for the hydraulophone, and camera phones.