Patti Smith's June 22, 2005, and Sept. 12, 2006, spoken-word performances of "The Coral Sea" in London, featuring guitar backing by My Bloody Valentine's Kevin Shields, will be released July 11 on the pair's PASK imprint.

The double-disc set comprises Smith's verbal tribute to her close friend, the late photographer Robert Mapplethorpe. "The Coral Sea" is also the title of a 1996 Smith book of prose and poetry.

According to a spokesperson, Smith and Shields both participated in the preparation of the recordings, but it is unknown if they plan to stage "The Coral Sea" again at some point.