These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Face of the Band: Sarah is more famous than Bob and Pete, despite them having founded the band.
Signature Song: Fairly successfully averted by dint of "resting" songs from their live set when they threaten to become this. "Only Love Can Break Your Heart" is probably their most recognisable song, thanks to being included on countless compilations.