$1.99 from Frontier Design Group
Give your music a bit of tambourine … some woodblock … more cowbell! Shake your iPhone, or tap the screen, to play along with your favorite tunes. Choose from fifteen instruments, all stored as high-quality stereo sounds. Fast or slow, loud or soft, enjoy making music everywhere you take your iPhone or iPod touch.
Cowbell Plus includes 22 instruments: claves, cowbell, crash cymbal, cymbal bell, drum sticks, egg shakers, gong, hand clap, closed hi hat, open hi hat, stomped hi hat, maracas, ride cymbal, rim shot, rim tap, sleigh bells, snare drum, tambourine, triangle, tube shaker, vibraslap, and woodblock.