The Schoemer Formation will make their Low Beat debut tonight (Thursday), featuring Karen Schoemer with Wreckless Eric and Amy Rigby (8 PM, $7, 432-6572). . . . Organic jam trio Haewa play Red Square tonight with the Greys (8 PM, 465-0444). . . . Lady Moon and the Eclipse will play Club Helsinki tomorrow (Friday) with Young Paris (9 PM, $12, 828-4800). . . . Synthpop voyagers Rival Galaxies will break in the Low Beat stage proper Saturday night with Secret Release and Birthday Boy Wes Stannard (8 PM, 432-6572). . . . It’s Americana night at the Half Moon on Saturday with Tallahassee (left) and Toy Soldiers (8 PM, thehalfmoonhudson.com). . . . Metal arrives at the Low Beat Sunday night with Maggot Brain, Hivesmasher, Bleak and Start the Reactor (8 PM, 432-6572). . . . The Felice Brothers return to Club Helsinki on Monday (8 PM, $22, 828-4800). . . . Ska mainstays Reel Big Fish skank the Upstate Concert Hall on Wednesday (8 PM, $18, 371-0012).