"Bad Blood" is a single originally released by Siobhan Fahey under her own name.
 It was released in October 2005, and failed to chart.
 Since its inclusion on Fahey's band Shakespears Sister's fourth studio album "Songs from the Red Room", it is considered a song by Shakespears Sister, and the third single from said album.
"Cheers Then" is a song recorded by English girl group Bananarama.
 It appears on their 1983 debut album "Deep Sea Skiving" and was released as its third single in November 1982, a few months before the album.
 The song was the first Bananarama single to be written by group members Sara Dallin, Siobhan Fahey and Keren Woodward and also their first ballad release.
WOW!
 is the fourth album by Bananarama, released in September 1987.
 The album was entirely produced and co-written with the Stock Aitken Waterman production trio and is the last album by the girl group to generate significant chart hits in the US.
 Tensions between group member Siobhan Fahey and Stock, Aitken and Waterman regarding songwriting input and lyrical content (particularly with the track "Strike it Rich" ) prompted Fahey's departure from Bananarama months after its release.
 By the time the album's fourth single, "I Want You Back", was released, Fahey had been replaced with Jacquie O'Sullivan, who re-recorded the vocals for the single version of the song.
 Fahey would resurface in 1988 with her new band, Shakespears Sister.
Bananarama are a British female pop music vocal group formed in London in 1981 by friends Sara Dallin, Siobhan Fahey and Keren Woodward.
 Their success on both pop and dance charts have earned them a listing in "The Guinness Book of Records" as the all-female group with the most chart entries in the world.
 In addition to their chart success, they are also known for their vocal style, generally singing in unison rather than in harmony like most vocal groups.
Please Yourself is the sixth studio album by British girl group Bananarama.
 It was released in 1993 by London Records, the last release the group had on this label.
 It is also the first album from Bananarama as a duo – with original members Sara Dallin and Keren Woodward continuing after the departure of Jacquie O'Sullivan the previous year and the last to feature both Sara Dallin and Keren Woodward to play bass guitar on some tracks on the album.
 "Please Yourself" also reunites Bananarama with two-thirds of the Stock Aitken Waterman production team (Stock and Waterman).
 Musician Gary Miller was brought in to do keyboards and guitar and would be Bananarama's next collaborator on their next album "Ultra Violet".
 The concept of the album was first suggested by Pete Waterman as 'ABBA-Banana', a record that would feature pop songs in the style of ABBA, but updated for the 1990s.
Sara Elizabeth Dallin (born 17 December 1961) is an English musician known for being a founder member of the British girl group Bananarama, along with Siobhan Fahey and Keren Woodward, with hits including "Cruel Summer", "Venus" and "Love in the First Degree".
 Dallin and Woodward have been members of Bananarama for over 35 years.
Shakespears Sister is a pop-rock project, formed by Irish-born singer–songwriter Siobhan Fahey in 1988, and based in the United Kingdom.
 Initially, Shakespears Sister was a solo act, but by 1989, it had become a duo with the addition of the American musician, Marcella Detroit.
 Together they released two Top 10 albums and a string of Top 40 hits, including the 1992 hit "Stay" which peaked at No. 1 in the UK for eight consecutive weeks.
 Detroit was fired from the band in 1993, leaving Fahey as the sole member again until she ended the project in 1996.
 After working under her own name for some years, Fahey revived the Shakespears Sister name in 2009.
Peter Day is an English recording/mixing engineer, record producer, and songwriter.
 Since the beginning of his musical career around 1987, he has been credited on numerous records from a diverse list of artists that includes Kylie, Sybil, Bananarama, Lisa Scott-Lee, Jason Donavon, and Rick Astley.
 He is also known for his audio engineering with songwriting/ production trio SAW ('Stock Aitken Waterman').
 To date he is credited on 13 top ten hits; 6 of which reaching No. 1.
Marcella Detroit (born Marcella Levy, June 21, 1952) is an American soprano vocalist, guitarist, and songwriter.
 She co-wrote the 1977 Eric Clapton hit "Lay Down Sally" and released her debut album "Marcella" in 1982.
 She joined Shakespears Sister in 1988 with ex-Bananarama member Siobhan Fahey.
 Their first two albums, "Sacred Heart" (1989), and "Hormonally Yours" (1992), both reached the top 10 of the UK Albums Chart.
 Detroit sang the lead vocals on their biggest hit, "Stay", which spent eight consecutive weeks at number one on the UK Singles Chart in 1992.
 Detroit left the band in 1993 and had a UK top 20 hit with "I Believe" in 1994.
 She formed the Marcy Levy Band in 2002, and finished third in the 2010 ITV series "Popstar to Operastar".
Keren Jane Woodward (born 2 April 1961) is an English pop singer and songwriter, known for being a founder member of the British girl group Bananarama, along with Sara Dallin and Siobhan Fahey.
 In 1986, they reached number one on the U.S. Billboard Hot 100 with their version of "Venus".
 Woodward has been a member of Bananarama for over 35 years.

Question: Pete Day has a recording credit with this band formed in London in 1981 by friends Sara Dallin, Siobhan Fahey, and what third person?
Answer: Keren Woodward