PLEASE NOTE: I don't keep serial numbers in stock and need to get them from PG Music marketing department. So there will be a slight delay in getting your serial number. Band-in-a-Box® 2021 RealBand 2021 Pro RealCombos: Over 300 RealTracks instruments in over 100 Bands! 54 MIDI SuperTracks Over 750 MIDI Styles Over 100 MIDI Soloists Over 60 MIDI Melodists 22 Artist Performances Over 1,000 Loops