Physical Impossibility: A Jewish Reflection on Scientific Mystery (Practice Tracks)

Includes 65 practice tracks, all with MIDI winds sounds (I find them easier to listen to than fake voices).  There is a separate set of tracks for each movement.  There are tracks for each voice part solo, each voice part in context but louder than all of the other parts, and one tutti track per movement.  After purchasing the mp3s, you may share them with your choir members (please do not share outside your organization).