Although it is not a cassette featuring demo recordings by Slowdive and Birdland, the covermount on this week's NME is absolutely amazing.
It is called 'Dancefloor Distortion' and is all ravey. It features some VERY GOOD REMIXES and costs just £4.99 or however much NME is these days. It certainly puts the E in NME!!!111!!!!!
The pink and yellow colour scheme is a bit dodgy, unfortunately.