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John Frusciante guest on the solo album by Catherine Ringer

From Paul:

John Frusciante played guitar on a new solo album by Catherine Ringer "Ring n 'Roll," released in May 2011. Catherine Ringer more commonly known as a singer of French pop group Les Rita Mitsouko.
John helped in the fifth artist album track "Prends-moi"
Listen to song: http://soundcloud.com/qwertz804/catherine-ringer-prends-moi

source: http://www.stadium -arcadium.com/forum/viewtopic.php? t = 35895

And Paul governs here: http://forum.rhcp.pl/viewtopic.php?f=6&t=358&start = 90