Good on Slash for laying down guitars on R&B star Estelle's new song (which the Velvet Revolver axeman tweeted this morning).

It got us thinking that there have been some inspired (and some not so inspired) guest guitar spots in the past, so here's our pick of Guitar's Top 10 Collaborations...

1. Slash & Lenny Kravitz


The Guns 'N' Roses axeman took a break from world domination in 1991 to lay down one of the tastiest rock licks ever on Lenny's classic track 'Always On The Run'.

2. Eddie Van Halen & Michael Jackson


In 1982 who did MJ call on when he needed a hard rockin' solo for his pop anthem 'Beat It'? The most notorious guitar player of the decade, one Eddie Van Halen, that's who...

3. Paul Weller & Oasis


The Modfather lent his lead guitar skills to Oasis' massive 1995 anthem 'Champagne Supernova' and has remained big buddies with the Manc rockers ever since

4. Dave Navarro & Christina Aguilera


Jane's Addiction and former Red Hot Chili Peppers guitarist Dave Navarro played the seriously dirty riff on Miss Aguilera's massive 2003 hit 'Fighter'