When students are first learning to play a piece on an Orff instrument or the recorder, the sequence can be played back at a slower tempo, gradually increasing the speed as students gain proficiency. Another helpful aspect of a sequencer is its ability to control the separate parts. So long as each part has been entered separately, they can be muted during playback. Teachers can mute the melody part of the sequence while the students perform the melody on the recorder or play just the percussion part for the class. Sequencers provide total control over every aspect of the playback.
Sequencers also can change the key of an accompaniment.
A piece could be played on Orff instruments in the key of C and then performed in the key of G with recorders. The same sequencer that is used for classroom activities can also be used in the choral and instrumental rehearsal. It can provide the accompaniment for performing groups. This allows the director to move around the room, evaluate student performance, and assist students as needed. Once the warm-up sequences are created and saved to disk, they can be used over and over.