dead wax 

the area on vinyl records between the last 'band'/track on the record and the label, varies greatly from one record company to the other, regarding value as well as quantity of useful information. The dead wax data on the products of smaller labels are often written manually, i.e. by hand.

I bought 12inch record but half of it is dead wax! It has only two tracks, the rest of it is blank, dead wax!

dead wax by Peter Gatys December 29, 2008