Can I suggest Nirvana - Territorial Pissings; then ease your friend into some of the lighter Nirvana, such as 'Smells Like Teen Spirit', which has lower points in between the heavier parts. Drop him, next, some 'Lithium', which has longer low points, and less crucial heavy parts. Next, move to 'In Bloom', which runs at a medium, yet steady pace... not too light, not too heavy. And when you got him to the point he can no longer resist hearing more, hit him up with 'The Man who Sold the World'.
That's the Cobain method; conversely, play him some Johnny Cash and he'll nd himself falling into a never-ending ring of re”he'll be hooked!
How you perform the conversion, is I guess, up to you
Also, I'm not sure about where you live, but here we have a campus radio station that plays some pretty weird-ass stuff by local bands (I think). Maybe he would like some of that? It's usually not heavy-metal; in fact, it's rarely even music.
Jon
In considering the Origin of Species, it is quite conceivable that a naturalist... might come to the conclusion that each species had not been independently created, but had descended, like varieties, from other species. - Charles Darwin
On the Origin of Species_ _ _ _ _ _ _ ____ _ _ _ _ _ _ _
En el mundo hay multitud de idiomas, y cada uno tiene su propio significado. -
I Corintios 14:10_ _ _ _ _ _ _ ____ _ _ _ _ _ _ _
A devout people with its back to the wall can be pushed deeper and deeper into hardening religious nativism, in the end even preferring national suicide to religious compromise. - Colin Wells
Sailing from Byzantium