From Phish.com:

In support of Record Store Day, Phish will release Two Soundchecks, a Limited Edition 7-inch vinyl record that will be available exclusively at participating independently owned record stores across the country. 'Two Soundchecks' marks the band's first ever live vinyl release and their first release in conjunction with Record Store Day.

This 7-inch is limited to 2,000 hand-numbered copies, and once they are gone they are gone. The A-Side is an instrumental jam culled from the soundcheck of Phish's third show of a sold out three-night stand at the Greek Theatre in Berkeley, CA. The B-Side is an especially exotic soundcheck from Hartford, CT in 2009, featuring Trey on Bass, and Fish on drums. This Limited Edition 7-inch was created exclusively for Record Store Day.

Two Soundchecks will be available in stores only beginning April 16th, 2011. For a complete list of participating record stores, please click here.