Question: Jane Relf and Paul Carrack are both what?

Context paragraphs:
Heart &amp; Soul (Ronnie Milsap album): Heart and Soul is the eighteenth studio album by country music artist Ronnie Milsap, released in 1987.  The album produced four singles, three of which claimed the top spot on the Billboard country singles chart" "Snap Your Fingers"; "Make No Mistake, She's Mine," a duet with Kenny Rogers; and "Where Do the Nights Go."  Two other singles, "Old Folks," a duet with Mike Reid; and "Button Off My Shirt" peaked at #2 and #4 respectively on the country charts.  "Button Off My Shirt" was also recorded that same year by Mike + The Mechanics & Ace vocalist Paul Carrack for his solo album "One Good Reason".

Mike + The Mechanics (1985 album): Mike + The Mechanics is the debut album by the Genesis bassist and guitarist Mike Rutherford's band Mike + The Mechanics in 1985.  The album reached number 26 on the "Billboard" 200 album charts and had three hit singles. " Silent Running", featuring lead vocals by Paul Carrack, and the up-tempo "All I Need Is a Miracle", featuring lead vocals by Paul Young, both reached the top 10 of the "Billboard" Hot 100 charts, peaking at numbers 6 and 5 respectively, with the former also peaking at number 1 on the Mainstream Rock Tracks chart.  The third single off the album, "Taken In", was a lesser hit, reaching No.32 on the Hot 100 and No.7 on the Billboard Adult Contemporary Singles chart.  "Silent Running" and "All I Need is a Miracle" were also hits in the UK, reaching numbers 21 and 53 in the UK Singles Chart respectively.

Nick Morris: Nick Morris is a film maker who began writing and making amateur films at school, one of which was shown at the NFT.  His professional career began in the 1980s with music videos for "The Final Countdown" by Europe, "Kyrie" by Mr. Mister and "Everytime You Go Away" by Paul Young.  After making approximately 100 promos for artists such as Elton John, Celine Dion, Alison Moyet, Warrant, Terence Trent D'Arby, Stevie Wonder, Paul Carrack, Prefab Sprout, Kirsty MacColl, Go West, the Kane Gang, The Alarm, Status Quo, Toto, Natalie Cole, Nena, Scorpions and the number one charity single Ferry Aid, he moved into longer form projects including the Cirque du Soleil show "Alegría", which was nominated for a primetime Emmy, "Jesus Christ Superstar", which won an International Emmy, and AC/DC's "Stiff Upper Lip Live" in Munich.  He has also directed DVDs for comedians such as The Mighty Boosh, Mitchell and Webb and Bill Bailey.  Other work includes numerous trailers and music clips for West End shows such as "The Producers", "Spamalot", "Calendar Girls", "Guys and Dolls", "Edward Scissorhands" and "The Rocky Horror Show".  in 2009 he captured Spandau Ballet's triumphant homecoming concert at the O2 Arena in London and Jude Law's portrayal of Hamlet.

Sad Café (band): Sad Café are an English rock band formed in Manchester in 1976, who achieved their peak of popularity in the late 1970s and early 1980s.  They are best known for the UK Top 40 singles "Every Day Hurts", "Strange Little Girl", "My Oh My" and "I'm in Love Again", the first of which was their biggest hit, reaching number 3 in the UK Singles Chart in 1979.  The band also had two US "Billboard" Hot 100 hits with "Run Home Girl" and "La-Di-Da".  Frontman Paul Young went on to achieve greater chart success as the co-lead singer (with Paul Carrack) of Mike + The Mechanics.

Loving You Tonight: "Loving You Tonight" is the fourth single released from Squeeze's tenth album, "Some Fantastic Place".  Lead vocals on the song are by Paul Carrack.  The only other time Carrack sang lead on a Squeeze track was in 1981, on the better-known "Tempted."

Over My Shoulder (Mike + The Mechanics song): "Over My Shoulder" is a pop rock song by British supergroup Mike + The Mechanics.  It was released on 13 February 1995 as the first single from their album "Beggar on a Beach of Gold".  Sung by Paul Carrack, it was the most successful single from that album, peaking at No.12 on UK Singles Chart.  Although it failed to crack the UK Top 10, the song became perhaps the band's biggest radio hit.  Co-lead vocalist Paul Young played rhythm guitar on the track.

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

Rewired (Mike + The Mechanics album): Rewired is the sixth studio album by Mike + The Mechanics, released in 2004.  This was the first album released by the band following the death of the co-lead singer Paul Young.  Partly because of this, the album was credited to "Mike + The Mechanics + Paul Carrack".  It is the only Mike + The Mechanics album to date with only one lead vocalist.

Paul Carrack: Paul Melvyn Carrack (born 22 April 1951) is an English singer, songwriter, composer and multi-instrumentalist who has recorded as both a solo artist and as a member of several popular bands.  The BBC dubbed Carrack "The Man with the Golden Voice", while "Record Collector" remarked: "If vocal talent equalled financial success, Paul Carrack would be a bigger name than legends such as Phil Collins or Elton John."

Some Fantastic Place: Some Fantastic Place is a 1993 album by the British new wave group Squeeze.  It was the band's tenth studio album, and it marked the departure of drummer Gilson Lavis, the only band member besides Chris Difford and Glenn Tilbrook who had appeared on every Squeeze album to this point (Lavis was replaced by Pete Thomas).  This record also marked the brief return of keyboardist/vocalist Paul Carrack.  Carrack had last appeared on 1981's "East Side Story", performing the lead vocals on one of Squeeze's most popular early singles, "Tempted."  "Loving You Tonight" became only the second Squeeze song cut in thirteen years to feature Carrack singing a lead part.  Additionally, bassist Keith Wilkinson wrote and sang "True Colours (The Storm)", the first song on a Squeeze album not written by Glenn Tilbrook, Chris Difford, Jools Holland, or any combination of those three.  The record was produced by Squeeze and Peter Smith.

Supporting paragraphs: Jane Relf Paul Carrack
Answer: singer