The is a quite generic approach to arrange drum samples. The most impressive realization was the MC 505 drum map. It doesn't lack all those fine exotic samples and is a bit more intuitive. Have a look at the octave shifting bass drum switching... NoteDrum Sound NoteDrum Sound 35Bass Drum 159Tom 36Bass Drum 260Tom 37Side Stick61Crash/ Cym 38Snare 162Tom 39Hand Clap63Ride/ Cym 40Snare 264Crash/ Cym 41Low Floor Tom65Ride 42Closed Hi-Hat66Tambourine 43High Floor Tom67Crash 44Pedal Hi-Hat68Cowbell 45Low Tom69Cymbal/ Crash/ Ride 46Open Hi-Hat70Guiro/ Cowbell/ Hi Bongo 47Bass Drum 371Ride 48Bass Drum 472High Bongo 49Sidestick (Rim)73Low Bongo/ Conga 50Snare 374(High) Conga 51Clap75(High) Conga 52Snare 476(Low) Conga 53Tom77High Timbale 54Closed High Hat78Low Timbale 55Tom79Agogo 56Open High Hat80Agogo/ Claves 57Tom81Cabase/ Guiro 58Open High Hat NoteDrum Sound NoteDrum Sound 82Maracas91Synthetic Sample 83Hit/ EFX Sample92EFX Sample 84Blip/ EFX Sample93Noise Sample 85Hit/ Blip94Clap 86Hit/ Noise Sample95Bass Drum 87EFX Sample96Bass Drum 88Hit97Snare 89EFX Sample98Snare/ Rim 90EFX Sample