There are 6,000 songs in the QuickSand Karaoke catalogue, and every single one of them leads to trouble. Nowhere is this more apparent than on Thursday nights at Bender's, when the place transforms from a cool Capitol Hill music venue into a frantic den of karaoke insanity. Show up early if you want to sing, because by 10 p.m., the competition for stage time is fierce: Everyone in Cap Hill, it seems, has the same pressing need to sing -- badly, drunkenly, obsessively -- to scores of slushy strangers. QuickSand's catalogue is vast, covering everything from Willie Nelson to Paul Weller, which means there's something for every vocal range and pain threshold. Notice how the volume gets louder as the hour gets later; come closing time, you'll be begging the DJ for just one...more...song.