Pencil This In

MUSIC: Well, duh, come to Gothamist House for all your music needs. We're opening our doors today, and would love to see you all there. Music, art, gift bags, Van Leeuwen hot chocolate floats, 2-for-1 drink specials and more! Today's lineup: Emmy the Great, Bell, Gabriel Kahane, Nat Baldwin, Physics of Meaning, Pattern is Movement and Extra Life. Details here, and check out Oh My Rockness's CMJ guide for even more music (and keep your eyes peeled for Chloë Sevigny, we spotted her last night at Stereogum's party).

2:30 to 8 p.m. // The Bell House [149 7th St, Gowanus] // Free

SCIENCE: Before they kick off a night of music for CMJ, Union Hall will be hosting the Secret Science Club, once again. Tonight they'll "be showing a selection of short films that are in competition for big prizes sponsored by Nature magazine and the Imagine Science Film Festival. You get to contribute to the judging—and meet three of the filmmakers."

7 p.m. // Union Hall [702 Union St, Park Slope] // Free

READING: The Happy Ending Music and Reading Series is back tonight. Featuring "storytellers, writers, musicians, raconteurs and personalities, and requires the readers to take one public risk, while the the musicians, who perform two short sets with their original, lyric-driven music, are required to play one cover song and try to get the audience to sing along." Tonight take it all in with Cristy C. Road, Keith Lee Morris, Deb Olin Unferth with music from Bronwen Exter.

7 p.m. // Happy Ending [302 Broome St] // Free

THEATER: Eureka!, the new interactive happening by the legendary Living Theatre, is performed for an audience sans seats, inviting spectators to trade their customary passivity for liberating participation. Inspired by Edgar Allen Poe's prose poem of the same name, the 75 minute show uses video, singing, dancing and celebration to "expand our knowledge of the universe." Writing for Time Out, Jeff Lewonczyk says, "there are moments when the revelatory power of the company’s storied history shines through, such as when the group splits off into a phalanx of marching soldiers on one side and a cluster of chanting monks on the other, with the audience stranded in between. It’s an apt metaphor for our world in general and Eureka! itself." – John Del Signore

8 p.m. // Living Theatre [21 Clinton St] // $20

Photo of the Bell House by Sam Horine.