This Saturday, after the parade craziness at Coney Island and musical madness at Grand Army Plaza, get ready for even more partying at Gemini & Scorpio’s Sea Creature Stomp, a post-Mermaid Parade, post-Make Music New York party featuring live music, DJs, cheap booze, rooftop lounging and ice cream. At the G&S loft in Gowanus you’ll be treated to the live sounds of Underground Horns, M.A.K.U. SoundSystem, Batala NYC and dancing all night long. All of the bands are brass and percussion ensembles who will have performed earlier during the day as part of the all-boroughs, free music festival. Come as you are–even in costume if you’re making your way from the Mermaid Parade. Admission is a $10-$20 suggested donation (all going to the bands) and you must RSVP to get the address.