Here in New York City, it’s the most musical time of the year because the CMJ Music Marathon, tomorrow through Saturday, is upon us (check out a selection of the bands you can see, above): five days and nights jam packed with bands playing in all sorts of places, including those you wouldn’t normally think would have a concert, plus plenty of the usual suspects. The Bowery Ballroom hosts CMJ lineups on Wednesday, Thursday, Friday and Saturday. Mercury Lounge welcomes the Aquarium Drunkard: No Jacket Required lineup tomorrow, the Windish Showcase on Wednesday, the Merge Records Showcase on Thursday, a FREE late-night show with Ratking on Friday and the MezzoForte Showcase on Saturday. And, of course, Music Hall of Williamsburg is on in this, too, with the Captured Tracks Showcase on Thursday and the Fat Wreck/Rocks Off Showcase on Friday. And once again we’re throwing our annual day party at Pianos with seven bands downstairs and six upstairs on Saturday. Get involved with a whole day of great tunes plus bloody marys and margaritas.