This CD was recorded in a private room of one person. The room was enough to record a personal song even if it was very narrow. Use musical instruments: GIBSON LES PAUL Jr Single cut-a-way TV Yellow FENDER MUSTANG BASS FENDER AMP CHANPION 30 Boot leg RRP-2.0 Maxon D&S2 Maxon Analog Delay AD-900 BOSS OS-2 OverDrive/Distortion Pro Tools LE Version7.1 Mbox2 Mac PowerBook G4 ...I think it is very few.