Another question: Would a mostly (as in MOSTLY, like 99%) original song with a three- or four-second melodic and lyrical homage to another song tacked on to the end count as a cover? I know this could be easily remedied by splicing the end bit off, but I'm just wondering.
What about a song written by one band for another band to use and record?
if you can read this you have really good eyes
I don't think there would be a problem. Social Distortion had Ring of Fire up. Which was a Johnny Cash. I think the "no covers" rule is to prevent nobodies performing songs not originally done by them
Another use case question. I have a metal band interested, and they'd like to use a song that has a guest solo from Steve Smyth- who's not a member of the band. The song is original, the lyrics are original, but the solo's a guest contribution. Does this still fall in the restricted category?