From Queenpedia.com

Discography → Brian May Guest Appearances

	Year	Artist	Song / Album	Notes
	1967	The Left-Handed Marriage	Appointment, I Need Time, She Was Once My Friend	Crazy Chain (album 1993)
	1975	Eddie Howell	Man from Manhattan	7" Single
	1976	Ian Hunter	You Nearly Did Me In	All-American Alien Boy (album)
	1977	Quartz	Circles	B-side of the single Stoking the Fires of Hell (1980); also bonus track on the 2004 reissue of the album Stand Up and Fight
	1978	Lonnie Donegan	Digging My Potatoes	Puttin' on the Style (album)
	1983	Jeffrey Osborne	Stay with Me Tonight, Two Wrongs Don't Make a Right	Stay with Me Tonight (album)
	1984	Billy Squier	(Another) 1984	Signs of Life (album)
	1985	Chris Thompson	A Shift in the Wind, Parts 1 and 2	Radio Voices (album)
	1986	Minako Honda	Crazy Nights, Golden Days (B-side)	Crazy Nights (single)
	1986	Ramoncín	Como un susurro	La vida en el filo (album)
	1987	Meat Loaf	A Time for Heroes	A Time for Heroes (single)
	1987	Bad News	Various Tracks	Bad News (album) - Brian played guitar and produced this album.
	1987	Anita Dobson	Talking Of Love	single - Co-Written & Produced by Brian May
	1987	Anita Dobson	I Dream Of Christmas	single - Written & Produced by Brian May
	1988	Anita Dobson	To Know Him Is To Love Him / Funny Old Life Ain't It	single - Written & Produced by Brian May
	1988	The Cross	Love Lies Bleeding (She Was A Wicked, Wily Waitress)	Shove It
	1989	Holly Johnson	Love Train	Blast (album), also issued as a single
	1989	Living in a Box	Blow the House Down	Gatecrashing (album), also issued as a single
	1989	Black Sabbath	When Death Calls	Headless Cross (album)
	1989	Fuzzbox	Self!	Big Bang (album), also issued as a single
	1989	Artists United for Nature	Yes We Can	single
	1989	Rock Aid Armenia	Smoke on the Water	single
	1990	Rock Against Repatriation	Sailing	single
	1991	Hale and Pace and the Stonkers	The Stonk	The Stonk - production and guitar (drums by Roger Taylor)
	1991	D-Rok	Red Planet Blues, Get out of My Way	Oblivion (album)
	1992	Extreme	Love Of My Life	Song for Love single
	1992	Judie Tzuke	I Can Read Books	Wonderland (album)
	1992	Hank Marvin	We Are The Champions	Into the Light (album), also issued as a single
	1992	Phenomena	A Whole Lot of Love	Phenomena III: Inner Vision (album)
	1992	Tony Martin	If There Is a Heaven	Back Where I Belong (album)
	1992	Cozy Powell	Somewhere in Time, Ride to Win	The Drums Are Back (album)
	1992	Steve Hackett	Don’t Fall Away From Me	The Unauthorised Biography (compilation album)
	1993	Paul Rodgers	I'm Ready	Muddy Water Blues: A Tribute to Muddy Waters (album)
	1993	Steve Hackett	Cassandra	bonus track on the album Guitar Noir
	1994	Os Paralamas do Sucesso	El Vampiro Bajo El Sol	Severino (album)
	1994	Soundgarden	New Damage	Alternative NRG: Greenpeace Compilation
	1995	Jennifer Rush	Who Wants To Live Forever	Out of My Hands (album)
	1995	Gordon Giltrap	Heartsong	Music for the Small Screen (album)
	1995	Carmine Appice	Nobody Knew (Black White House)	Carmine Appice's Guitar Zeus (album), also issued as a single
	1995	S.O.L.	Make My Dream Come True	S.O.L. - Some Other Language (album)
	1996	Status Quo	Raining in My Heart	Don't Stop (album)
	1996	Rock Therapy	Reaching Out	single
	2000	Foo Fighters	Have A Cigar	Music From And Inspired By Mission: Impossible 2 (album)
	2000	Steve Hackett	Slot Machine	Feedback ‘86 (album)
	2000	Tony Iommi	Goodbye Lament, Flame On	Iommi (album)
	2000	Freddie Mercury	She Blows Hot And Cold (Alternative Version)	The Solo Collection (box set)
	2001	5ive	We Will Rock You	Invincible (album), also issued as a single
	2001	Robbie Williams	Eternity	Eternity (single)
	2002	Claire Sweeney	Too Much Love Will Kill You	Claire (album)
	2002	Lynn Carey Saylor	If We Believe	If We Believe (single)
	2002	Foo Fighters	Tired of You	One by One (album)
	2003	The Yardbirds	Mr. You're a Better Man Than I	Birdland (album)
	2003	Tim Staffell	Earth, Doing All Right	Amigo (album)
	2004	Zucchero	Il mare impetuoso al tramonto salì sulla luna e dietro una tendina di stelle...	Zu & Co. (album)
	2004	Jimmy Gnecco	Someone To Die For	Spiderman 2 Soundtrack (album)
	2006	Meat Loaf	Bad for Good	Bat out of Hell III: The Monster Is Loose (album)
	2006	Don Nix	Going Down	Going Down: the Songs of Don Nix (album)
	2006	Diana Ross	Crazy Little Thing Called Love	I Love You (album)
	2006	Cliff Richard	Move It	single
	2007	Lynn Carey Saylor	We Belong	You Like It Clean (album)
	2007	Kerry Ellis	Defying Gravity / I'm Not That Girl / No One But You	Wicked In Rock (single) - Brian played guitar and produced this single.
	2009	Catherine Porter	Somebody To Love	Gems For Ruby (album)
	2009	Bandaged	All You Need Is Love	single
	2010	E S Posthumus	We Will Rock You	Unreleased (Recorded for Superbowl XLIV but never used)
	2010	Meat Loaf	Love Is Not Real / Next Time You Stab Me In The Back	Hang Cool Teddy Bear (album)
	2010	Taylor Hawkins & The Coattail Riders	Way Down, Don't Have To Speak	Red Light Fever (album)
	2010	Kerry Ellis	Various Tracks	Anthems (album) - Brian: arrangement, backing vocals, bass, guitars, piano, keyboards, production
	2010	Rock Aid Armenia	Smoke on the Water (2010 Wermut & Dee Remix) / Smoke on the Water (1989 Original Mix) / Smoke on the Water (1990 Radio Mix) / The Making Of Smoke On The Water (Documentary) / Promo Video	Smoke On The Water: The Metropolis Sessions (CD + DVD)
	2011	Lady Gaga	Yoü And I	Born This Way (album) - Brian played guitar, plus We Will Rock You sampled

Discography → Brian May Guest Appearances