4s + 3i = 1p for Multiple Percussion Solo - 1'30 Min.; Snare Drum, 2 Tom-Toms; + Erläuterungen (engl.) One of he fun things about being a percussionist is being able to play a number of instruments at the same time. The musical equation 4s + 3i = 1p is the formula for having an enormous amount of fun playing a multiple percussion setup such as this solo foe 2 tom-toms and snare drum.