If you've been meaning to catch Debajo Del Agua and haven't done so yet -- man! You better get on it. Tomorrow night may be your last chance for a long time. The outstanding ensemble is playing its final show at the Mercury Cafe before embarking on what they're referring to as an indefinite hiatus -- which sounds to us like a nice way of saying they're going the way of analog television. Who knows? Maybe they're just hibernating. Either way, the outfit promises the all ages show, which kicks off at 9 p.m. with Soulaju and Grupo Macondo, is going to feature songs the group hasn't played in some time, and will be recorded for a forthcoming live release.