Ensemble polishing.
An activity similar to "Polishing repertoire" can be used for polishing ensemble
pieces for multiple pianos. The parts are divided among the members. Each student works on his or her part privately. The group is formed. All students set their sequencers to record, and perform the piece together.
Then they play back all the recordings simultaneously, and take turns to
critique their group performance. Positive comments should be encouraged.
Suggestions and ideas are discussed and tried as a group. Students practice their parts alone. The piece is recorded
again and compared to the older version. The instructor may want to guide the student discussion by providing
a "check list" of items such as balance, tempo, articulation, character,
instrumentation, etc. The instructor should also monitor and intervene with
suggestions.