(1) (noun) If many tracks of effects or music are required for a specific scene, the mixing engineer may elect to mix all of these effects together onto a single strip of magnetic film or onto a single track (or at least fewer tracks) of the multitrack master, then use this one track during the final mix rather than the individual effects tracks. Because this effects mix is done before the final mix, it is called the pre-mix. Dialog premixing often does not actually reduce the number of tracks that will go into the final mix, but instead just copies a cut track across with careful equalization and fader moves. See binky. (2) (verb) To mix and bounce two or more tracks of a multitrack tape before making the final mix of all tracks. Done to free up tracks for additional instruments or voices, or to save time in the final mix by having sections already mixed.