About three years ago, Yoko Ono took the stage alongside RZA in Los Angeles for a dramatic performance art-like evening that featured the two playing chess and doing duets. Now they've teamed up to release a 10" commemorating the event, featuring live recordings of two songs: "Seed of Joy / Life Is a Struggle" and Yoko Ono's Plastic Ono Band's "Greenfield Morning I Pushed An Empty Baby Carriage All Over The City".

The 10" is part of an ongoing series of collaborative releases from Yoko Ono; it'll be out in a limited run of 1,000 on one-sided vinyl with Yoko's etching on the b-side. Proceeds from the sale of the vinyl and the downloads will go a Staten Island organization called the Children's Literary Society. Find the vinyl here and the download on iTunes.

Watch video of RZA and Yoko Ono's 2010 performance:

Watch a Pitchfork.tv interview with RZA: