(top) Aimee Zannoni, 30, (left) and Maslon Pelayo, 22, (right) from the Invertigo Dance Theatre rehearse scenes from 'Leap Year Waltzes, Etc' on Thursday, February 21, 2008 at Studio No. 1 (above) Marisa Jimenez, 24, (left) and Alheli Montano, 25, (right) perform a duet during the rehearsal on Thursday. The show will open on Leap Day, February 29 at Highways Performance Space Leap year: You only get this extra day once every 4 years - use it wisely!