At the record-release show for their new split 7-inch, the youngsters who comprise Jen Hitt made me remember all the reasons I liked indie-pop at their age: unbridled energy, demure sensitivity, and a blanket of fuzzy guitars. The band’s quiet girl singer is backed by three rambunctious boys. They jump around. They smile. Velocity boys and girls unite! With Van Pelt at 8:30 p.m. at the Black Cat, 1831 14th St. NW. $3. (202) 667-7960. (CP)