That's not art? The whole point of art is to make someone feel something. And a big part of getting people to feel is playing on familiarity - for example, how

That's not art? The whole point of art is to make someone feel something. And a big part of getting people to feel is playing on familiarity - for example, how much rock music can be traced directly or indirectly to Chuck Berry? Almost every guitarist has been affected by him. We all mine Chuck Berry riffs, and thus the audience can latch on to our original music and have a spark of recognition. Product "or" art? It's not either/or.