Question: Who the female singer on gimme shelter?

Disambiguated questions and answers:
context: The recording features guest vocals by Merry Clayton, recorded at a last-minute late-night recording session during the mixing phase, arranged by her friend and record producer Jack Nitzsche. After the first verse is sung by Jagger, Merry Clayton enters and they share the next three verses. A harmonica solo by Jagger and guitar solo by Richards follow. Then, with great energy, Clayton repeatedly sings "Rape, murder! It's just a shot away! It's just a shot away!", almost screaming the final stanza. She and Jagger then repeat the line "It's just a shot away" and finish with repeats of "It's just a kiss away". When speaking of her inclusion in the recording, Jagger stated in the 2003 book "According to the Rolling Stones": "The use of the female voice was the producer's idea. It would be one of those moments along the lines of 'I hear a girl on this track – get one on the phone.'" Summoned – pregnant – from bed around midnight by producer Jack Nitzsche, Clayton made her recording with just a few takes then returned home to bed. It remains the most prominent contribution to a Rolling Stones track by a female vocalist.
question: Who was the female singer on the recorded version of Gimme Shelter?
short_answers: Merry Clayton
wikipage: Gimme Shelter

context: The female contributor to the song live is Lisa Fischer, the only woman to appear in all their tours since 1989.
question: Who was the female singer on Gimme Shelter on tour?
short_answers: Lisa Fischer
wikipage: Gimme Shelter

Long answers:
knowledge: content: "Gimme Shelter" is the opening track to the 1969 album Let It Bleed by the Rolling Stones. 
wikipage: Gimme Shelter

content: She has been a back-up singer for a number of famous artists including Sting, Luther Vandross and Tina Turner, and toured with The Rolling Stones from 1989 to 2015.
wikipage: Lisa Fischer

content: The female contributor to the live version of the song is Lisa Fischer, the only woman to appear in all their tours since 1989.
wikipage: Gimme Shelter
long_answer: Female vocals on the 1969 recorded song "Gimme Shelter," by The Rolling Stones, are performed by Merry Clayton. On tour, the female vocals in the song were performed by Lisa Fischer. She toured with the band from 1989 to 2005. 

knowledge: content: "Gimme Shelter" is the opening track to the 1969 album Let It Bleed by the Rolling Stones. Greil Marcus, writing in the unaffiliated Rolling Stone magazine at the time of its release, praised the song, stating that the band has "never done anything better".
wikipage: Gimme Shelter

content: It is on Rolling Stone's 500 Greatest Songs of All Time list, and is also the 34th best ranked song on critics' all-time lists according to Acclaimed Music.
wikipage: Gimme Shelter
long_answer: "Gimme Shelter" is the opening song to the 1969 album Let It Bleed by the Rolling Stones which features guest vocals by Merry Clayton, recorded at a last-minute late-night recording session during the mixing phase, arranged by her friend and record producer Jack Nitzsche. The female contributor to the song live is Lisa Fischer, the only woman to appear in all their tours since 1989. The song is on Rolling Stone's 500 Greatest Songs of All Time list, and is also the 34th best ranked song on critics' all-time lists according to Acclaimed Music.