Question:  In between Levi Stubbs and Jane Relf who is a British singer?

Context paragraphs:
Ask the Lonely: "Ask the Lonely" is a soul/pop ballad recorded by Motown singing group the Four Tops.  Released as the group's third single, the single became the group's second successful single ever since signing to Motown in 1963.  Released in 1965, the song rose to number 24 pop and number 9 R&B.  It's notable for it being co-written by longtime Motown staffer Mickey Stevenson as most of the group's hits on Motown were written and produced by Holland-Dozier-Holland.  It's also notable for lead singer Levi Stubbs' emotional lead and The Andantes helping the other Tops (Renaldo "Obie" Benson, Lawrence Payton and Abdul "Duke" Fakir) in the background.

Jane Relf: Jane Relf (born 7 March 1947) is a British singer and the younger sister of Keith Relf of the Yardbirds.

Little Shop of Horrors (film): Little Shop of Horrors is a 1986 American rock musical horror comedy film directed by Frank Oz.  It is a film adaptation of the off-Broadway musical comedy of the same name by composer Alan Menken and writer Howard Ashman about a nerdy florist shop worker who finds out his venus fly trap can speak.  Menken and Ashman's Off-Broadway musical was based on the low-budget 1960 film "The Little Shop of Horrors", directed by Roger Corman.  The 1986 film stars Rick Moranis, Ellen Greene, Vincent Gardenia, Steve Martin, and Levi Stubbs as the voice of Audrey II.  The film also featured special appearances by James Belushi, John Candy, Christopher Guest, and Bill Murray.  It was produced by David Geffen through The Geffen Company and released by Warner Bros. on December 19, 1986.

Levi Stubbs' Tears: "Levi Stubbs' Tears" is a song by Billy Bragg.  It was the first single released from Bragg's 1986 album "Talking with the Taxman about Poetry".  The song's title refers to The Four Tops lead singer Levi Stubbs, whose music remains a source of comfort to the protagonist through years of abandonment, injury, and domestic violence.

Joe Stubbs: Joe Stubbs (born Joseph Stubbles, 1942 — February 5, 1998) was an American R&B/soul singer who became the lead singer of four different groups throughout his recording career.  He was the younger brother of The Four Tops' lead Levi Stubbs.

You Gotta Have Love in Your Heart: "You Gotta Have Love in Your Heart" is a duet single between Motown singing groups The Supremes and the Four Tops, released as a single from their "The Return of the Magnificent 7" album in 1971.  The single became a modest charter peaking at #55 on the U.S. "Billboard" Hot 100 chart and #41 on the U.S. "Billboard" R&B Singles Chart.  The single fared better in the UK, where it reached #25 in the official top 50 single chart.  Lead vocals were by the groups' respective lead singers Jean Terrell and Levi Stubbs.

Greetings to the New Brunette: "Greetings to the New Brunette" is a song by Billy Bragg from the 1986 album "Talking with the Taxman About Poetry".  It was the second single from the album, following "Levi Stubbs' Tears", and reached No. 58 on the UK Singles Chart in October 1986.

Lu Pine Records: Lu Pine Records was a small local record label in Detroit, Michigan, active during the late-1950s and 1960s.  The label released records by a number of artists, including Joe Stubbs (brother of Four Tops lead singer Levi Stubbs), Eddie Floyd, The Falcons and The Ohio Untouchables (later renamed the Ohio Players).

The Return of the Magnificent Seven: The Return of the Magnificent Seven is the second collaborative album between Motown label-mates The Supremes and Four Tops, released in 1971.  The production only featured two covers compared to their first album together, "The Magnificent 7", that included more than eight.  Although the three albums the Supremes recorded with the Four Tops did not match the commercial success of the Supremes/Temptations duet albums (ironically loaded with covers), what they did have instead were original tunes, soulful lead vocals by Jean Terrell and Levi Stubbs and high production values in terms of arrangements and orchestration.

Levi Stubbs: Levi Stubbs (born Levi Stubbles, June 6, 1936 – October 17, 2008) was an American baritone singer, best known as the lead vocalist of the R&B group the Four Tops, a group known for a variety of Motown hit records and other songs created in the 1960s and 1970s.  He has been noted by writers for his emotional, often dramatic, style of singing.

Supporting paragraphs: Levi Stubbs Jane Relf
Answer: Jane Relf