I think about the history of it, how different musicians played with one another, record labels, album artwork, musical instruments, drum patterns, different timings, figuring out music theory in my head, how much I need to spend on a record player, record shelves, what happens when you play chords on bass, the effort I need to do that who I play with, when’s my next gig, how was my last gig, what’s that melody I’m hearing, writing lyrics…