I know this is contrary to 99% of the majority, but...
When we go out on the weekends to listen to music and dance, we want to hear something that's familiar and that we can tap our feet to. That's what seems to get the crowd up and dancin' and havin' a good time... It's cool if they throw in a few originals (if they are up-beat and of the same genre as the rest of their tunes) but not the other way 'round, with mostly originals. If we walk in and it's some guy on an acoustic droning on with some rhyme that he's made up, we turn right around. When we see a billboard announcing 'the Somebody's, playing a ton of tunes you've never heard', we look elsewhere.
As far as putting together a group, the closest I'd come to an original would be some 'b-side' tunes that most people have never heard of but that were done by a band that we dig. That kind of thing can be very interesting. And the covers don't need to be note-for-note identical, a bands interpretation is cool! A cover will always be a 'cover' not the original.
There's an unpopular opinion, but just to say not everyone is of the same mind...
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