The differences between tiers - Unlimited is better quality, has an offline mode, and allows full cell phone access. And you need to sign up for an invite to access the free version - which I've done, so we'll see.
Wasn't Mascis really, really fat in high school? Or did he pork up in college? And thanks for the extra info. I figured "Do You Love Me Now" was the song because it was the only Breeders track I've seen produced by him.