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What’s good about great tracks is that they can have many incarnations. A meaningful song could have been a hit in the 50’s and then re-imagined by a fresh 80’s act.
Great songs usually make you not only want to listen but to sing out loud, dance, play along or bang the f*ck out of your imaginary drums.
Whereas it’s working with references or writing completely original music, a commercial needs a catchy melody and a good beat.