A month after we received word of Bon Iver’s self-titled second album, with all its promises of "silky" guitars and song titles that read like an RV road trip, the first track has debuted to provide concrete evidence of that album’s existence. Below you can check out the spacey “Calgary,” or enter your email address to download the MP3. You can also now preorder the album before its June 21 release at the Jagjaguwar website.