J. Mascis' Dinosaur Jr. bandmate Lou Barlow has his own band, Sebadoh. They've been around since '86 and have a new album Defend Yourself coming out September 17. Here's the first single, the guitar heavy 90's sounding track, "I Will". It starts off nice and mellow and amps up the intensity as it progresses.
They've also released a video for the track "All Kinds".