Many years ago I was playing in a 'mostly originals' (for want of a better phrase) blues rock three piece. At one gig - where alongside our own songs we did play rearrangements of a Hendrix song, a Hambone Willie Newbern song, and a Robert Parker song - as we came off stage ...
Punter (male, late teens): "Have you always been a tribute band?"
Me (male, not late teens): "Tribute band? Why do you say that?"
Punter: "You did a Hendrix song."
Me: "Er....yeh. What's that got to do with being a tribute band?"
Punter: "If you play someone else's song, you're a tribute band."
Me: "I don't think so but whatever..."
Punter (as I start packing gear): "You were really good for a tribute band."
Me: "Thanks."
I'm guessing that he was unfamiliar with Hambone Willie Newbern and Robert Parker or we would have been labelled a triple tribute band.