Photo by Tara Clarke.

LEMURS: Save the Lemurs! The Lemur Conversation Network—of which Project Director and Creative Director Lynne Venart is a long-time DCist contributor—a group of over 40 organizations uniting to save the Lemurs, is hosting a launch party at Right Proper Brewing. There will be live music, discounted drinks, a brand new book (not even in stores yet!) from renowned lemur researcher Alison Jolly for sale, and giveaways including Lemur bobbleheads and t-shirts. You should also plan to tweet, tweet, tweet, as The Art Monkey will award Conservation Fusion with $5 for every #ilovelemurs social media mention during the event (up to $500). Raffle proceeds (first raffle ticket is free) will be donated to Sadabe (624 T Street NW) 6-10 p.m.

DANCE: Experience the intersection of interactive dance, computer art, and electronic music during the world premiere of MindFluctuations. Lisner Auditorium (730 21st Street NW) 8 p.m. $25-32

ART: Buy art seconds after it’s created when Sketch Lounge returns after a year long hiatus.. Art pieces will sell for $5-30. Hiearchy (1847 Columbia Road NW) 7-11 p.m.

PHOTOGRAPHY: Contrario Collective, the recently launched “photocollective dedicated to fostering, challenging, and showcasing the creative images created by a group of distinct individuals,” is hosting their first event tonight. Purchase photos from the five founding photographers while enjoying refreshments from Dolcezza Gelato and Crunkcakes. Ulysses Room (52 O Street NW) 6:30-9 p.m.