SEQ - PowerTracks Pro Audio Project File is a file extension that was made with PowerTracks Pro Audio program. It may consist of both audio and MIDI tracks as well. They will all be able to get played back at the same exact time. You can also use this extension for storing digital mixer settings, as well as panning, and looking through different effects. There are different files under SEQ that can consist of song structure information, and different tempos. This file extension comes in handy for those that want to try something a little bit different. SEQ files are pretty common these days, but without a simple file extension, you will not have as much features as you would without it.