Philly's Reading Rainbow just sent over this brand new, super bright megajam, the first finished track from a batch of 12 recently recorded (last weekend) songs, all set to appear on a full-length sometime later this year. "Underground" is short but extremely sweet, with accompanying rad collage art coming courtesy of RR's Sarah Everton:

Catch Reading Rainbow at one of their handful of SXSW '10 shows, including the Weekly Tape Deck/Yours Truly/Transparent/Underwater Peoples/Friendship Bracelet epic 3-day affair.