The main rehearsal space for the College Choir, Dickinson Orchestra, Symphonic Band, and Jazz Ensemble, Weiss 012 includes riser-style seating for 100, a MIDI-enabled Bösdendorfer grand piano, and stereo recording and playback equipment.

The Weiss Rehearsal Room is most easily accessed via the southeast entrance to the Weiss Center (on the corner nearest South College); or, to avoid stairs, enter via the loading ramp at the southwest corner of the building.