Unless you are using each patch in a performance over several octaves or each patch you use is comprised of 3-4 tones, you can make each patch bi-,tri-, or quadri-timbral by strategically mapping each tone to a specific key range. Obviously, you can also make 4-piece drum kits this way. And, if you own an expansion board that has percussion menu patches (HH, B&D, Techno, etc.), using the above method is an easy way to create many-hit drum kits on tracks/parts other than 10.