The sounds of music, along with descriptions of how they are created and the rules of physics they follow, will be the subject of the April 19 CU Wizards show "The Physics of Music." Jim Faller, a physicist at the University of Colorado at ºù«ÍÞÊÓƵ, will present the show at 9:30 a.m. in Duane Physics, room G1B30. The show, aimed at students in grades five through nine, is free and open to the public.