Some days are fun to bounce around for variety, but I love those days where you just get pulled down the rabbit hole of more and more of a band or genre. 
Sometimes I like to listen how a band evolves over time. Genesis is interesting because when two important members left the band (Gabriel and Hackett) their sound went in a new direction. Even with the final lineup well-established, the change from Duke to ABACAB (only one year apart) is pretty dramatic. I love listening like that when I can do it without interruption
