Thanks for the reassurance. I cannot say as I care how much heavy rock is on AM as if truth beknown, I am more of a heavy rock fan than anything with my collection being very biased in that direction. In fact very biased towards heavy rock. Concerts and festivals that I've been to have almost exclusively been heavy rock bands. So go ahead put up as many as you like.
Go on make my day.

As for Black Sabbath's Fluff. Yes very good. From Sabbath Bloody Sabbath. I quite like Killing Yourself To Live from the same album.
With me having some 16 Sabbath albums, would you say that I like them. Just a bit eh. But I wouldn't expect nor ask ANY track to turn up on AM. Simply because they are NOT a progrock band.

To pick and choose acoustic/instrumental tracks to me opens the gates to ANY band and ANY Genre. Mark my words, the heavy rock fans will arrive. I can vision it now 'I'd like to suggest Houses of The Holy and Physical Graffiti....'

If you want Led Zep or any other heavy rock band track, then go elsewhere. Not AM. As a Floyd fan myself I ask a simple question.
Why do people come to AM requesting Floyd stuff. I know of at least 4 net radio sites that are dedicated to Floyd and only Floyd.
Several at a better stream rate.

Add who you like. But don't winge at me when it all goes sour.

Remember how I found AM. A search engine for Sky's Toccata.
So it just takes just the ONE track regardless of how good it is for the heavy rock brigade to turn up. Think about it.

Yes - completely relaxed.