Slash took to Twitter to defend Black Eyed Peas singer Fergie's vocal performance on a new recording she did with Slash of the Guns N' Roses classic "Paradise City," also featuring Cypress Hill. A leaked copy of the recording surfaced online last week, while Slash is contemplating whether to include it on his new solo album.

The former Guns guitarist tweeted, "Until now, not too many people have heard Fergie sing Rock & Roll but she sings it better (than) most dudes I know. She's a screamer at heart."

The record, titled Slash & Friends, is tentatively due out in March 2010.

Among the other guests appearing on the album are Dave Grohl, Flea, Chris Cornell, Duff McKagan, Wolfmother's Andrew Stockdale, Iggy Pop, Alice Cooper, Nicole Scherzinger, Meat Loaf, Maroon 5's Adam Levine and Ozzy Osbourne, who contributes vocals to the first single.

Slash "and friends" will perform at a fundraiser for the Los Angeles Youth Nation at Hollywood's Avalon Theater on November 22nd. Ozzy, Billy Idol, Andrew Stockdale, Linkin Park's Chester Bennington, Dave Navarro and Travis Barker are all tentatively slated to appear.