I play just about every day, going over old stuff, and trying 'new' stuff ... I really don't play any of today's new songs, even though some of them pretty good ... I just don't see, that even in a venue like the restaurant I sometimes play in, a heavy, bald guy in his mid seventies is going to be appreciated performing an Ed Sheeran song ...
The 'new' stuff I work on are songs that are new to ME ... Like the past few days the Nat King Cole song "That Day, Last Summer" has been going around in my head, so I will probably work on that next week ...
Although I am not a 'Jazz player' by any stretch of the imagination, I also like to pick up the Real Book and go through songs from there ...