Here’s a rare indie compilation perfect for geeks and novices alike: a two-disc collection of otherwise unavailable tracks from bigger-name bands as well as unknowns, and the first release on a label, Brooklyn’s Rare Book Room, that you’re well advised to get to know now. Buy it for new songs from Avey Tare (of Animal Collective), Deerhunter, or the Naysayer, or for the overall great tracklist, sequenced like a good, old-fashioned mix tape to smooth out the multiplicity of sounds.