He’s My Brother She’s My Sister came tappin’ to the Larimer Lounge last night. The quintet consists of a real life brother sister Rachel and Robert Kolar. The unsigned band from Los Angeles brought that “old time” rock n roll to the stage and appeared to having a rollicking time in the process. The dualing vocals by the siblings played well off each other and playful demeanor made for a light hearted experience. The added cello by Satya Bhabha and tap dancing by Lauren Brown proved to be vital elements of the night and perhaps the unsung heroes.