Wrong notes can be turned into correct notes. Parts can be harmonized. Real voices and instruments can be recorded with a microphone, cut and pasted. Audio effects like Reverb and Chorus can be added. Here are some powerful and imaginative ways that Cakewalk Music Software is used in schools.
Many teachers actually use the programs for teaching better instrument performance skills.
In Concert provides real-time interactive accompaniment for students of all playing levels. The band or orchestra will follow the student's tempo and dynamics. With a tempo display and the ability to record each practice, both the teacher and student can critique the performance on playback. Since Cakewalk can record actual instruments, and not just MIDI, some teachers will take the sax part of a jazz piece, for instance, mute the MIDI sax, and replace it with an actual live performance by one of their students. If the school has four tenor sax players, perhaps all four can try to play or improvise their parts on different audio tracks over the original.