Apps with 'Drum matrix editing' feature

FL Studio (originally known as FruityLoops) is a full-featured Digital Audio Workstation (DAW) offering a complete range of professional tools for everything from audio editing and beat creation to advanced arrangement, composition, mixing and mastering.

Walk Band is a music studio (a toolkit of virtual musical instruments) customized for Android. It contains tons of features including Piano, Guitar, Drum Kit,Drum Machine, Bass, Multi-tracks synthesizer etc. All instruments use the realistic instrument sounds.