Drum offers two apps in one, Drum and Piano.
When you first Open Drum You will see a "Equalizer" This display can be chosen to turn "Off" or "On" .
The Guitar option is an great option in Drum, There are two different guitars, one on the left and another on the right. Both Guitars play different sounds. Play and strum actual chords, As if you were on a real guitar! Play your iPad like a real guitar, Along with Genuine, acoustic guitar sounds.