Momma at Brooklyn SteelNov. 20. 8PM. $41.50 The four-piece group Momma may have started in California, but they are very much a Brooklyn band now. Founded by singer/guitarists Etta Friedman and Allegra Weingarten, the band plays immaculately composed yet immediately potent songs by matching the rawness of rock with sticky melodies and taut pop arrangements. Momma plays Nov. 20 at Brooklyn Steel.