Overdub

Overdub is a recording technique where you add a new audio (or MIDI) track on top of an existing take, while listening to it in real time. Widely used in studio production, this method allows for layering additional vocals, harmonies, doubles, solos, sound effects, and more—without re-recording the full performance. Overdubbing is a core part of multitrack recording, whether in music, film, or podcast production.