Everybody’s knowledge of music, or of essential albums, or of what they’re supposed to know/like, has the same number of gaps, just in different places. For instance: I’ve actually never listened to an X album! And before you are like, what, how could you not have done that, it’s because I was listening to, I dunno, Mark Lanegan records that you’ve never heard, or chasing down live Regina Spektor recordings that you didn’t know existed, or whatever. So let’s drop the pretense of universal knowledge, acknowledge that taste is subjective, and have a good time with all of this? Everybody is only ever pretending to know as much about music as you think they do, and this is all meant to be fun.