Intended to maximize sales appeal to a wide range of musicians, the SR16 offers 50 different drum beat styles (rock, jazz, country, etc.) using up to 12 pieces of percussion instruments (kick, snare, cymbals, toms, etc.) making up a drum set. Each piece is assigned to a physical drum pad button on the face of the SR16. For me, I found only about a dozen factory-installed drum beat styles (called presets) I can use. Of these, I can easily change the tempo for live performances. BUT this is where easy ends.