Question: Who wrote the song which was ahead of "Purple Rain on the charts in 1984?

full_context: Document 1: Wake Me Up Before You Go-Go: "Wake Me Up Before You Go-Go" is a song by the British duo Wham!, first released as a single in the UK on 14 May 1984. It became their first UK and US number one hit. It was written and produced by George Michael. The single was certified Platinum in the US, which at the time commemorated sales of over two million copies.
Document 2: Purple Rain Tour: The Purple Rain Tour was the fifth concert tour by American recording artist Prince and The Revolution following up on the success of his sixth studio album "Purple Rain" and his 1984 film "Purple Rain". According to "Spin", the tour sold over 1.7 million tickets.
Document 3: I Got You Babe: "I Got You Babe" is a song written by Sonny Bono. It was the first single taken from the debut studio album "Look at Us", of the American pop music duo Sonny & Cher. In August 1965, their single spent three weeks at number 1 on the "Billboard" Hot 100 in the United States where it sold more than 1 million copies and was certified Gold. It also reached number 1 in the United Kingdom and Canada. In 1985, a cover version of "I Got You Babe" by British reggae/pop band UB40 featuring American singer Chrissie Hynde, peaked at number one in the UK Singles Chart and reached number 28 on the US "Billboard" Hot 100 chart. A 1993 version by Cher with Beavis and Butt-Head bubbled under the Hot 100 chart.
Document 4: Let's Go Crazy: "Let's Go Crazy" is a 1984 song by Prince and The Revolution, from the album "Purple Rain". It was the opening track on both the album and the film "Purple Rain". "Let's Go Crazy" was one of Prince's most popular songs, and was a staple for concert performances, often segueing into other hits. When released as a single, the song became Prince's second number-one hit on the "Billboard" Hot 100, and also topped the two component charts, the Hot R&B/Hip-Hop Songs and Hot Dance Club Play charts, as well as becoming a UK Top 10 hit. The B-side was the lyrically controversial "Erotic City". In the UK, the song was released as a double A-side with "Take Me with U".
Document 5: Computer Blue: "Computer Blue" is the fourth track on Prince and the Revolution's soundtrack album, "Purple Rain". In the film, the song represents Prince's angst at the budding relationship between the characters played by Morris Day and Apollonia. The song was composed by Prince, with credit to his father, John L. Nelson for the guitar solo based on a piano instrumental written by Nelson and Prince. Prince titled the piece "Father's Song" and recorded it on piano for the film, though on screen it was portrayed as being played by Prince's on-screen father, actor Clarence Williams III. On the box-set "Purple Rain Deluxe" (2017) a different and longer recording of "Father's Song" is included.
Document 6: Boy George: Boy George (born George Alan O'Dowd; 14 June 1961) is an English singer, songwriter, DJ, fashion designer and photographer. He is the lead singer of the Grammy and Brit Award-winning pop band Culture Club. At the height of the band's fame, during the 1980s, they recorded global hit songs such as "Do You Really Want to Hurt Me", "Time (Clock of the Heart)" and "Karma Chameleon" and George is known for his soulful voice and androgynous appearance. He was part of the English New Romantic movement which emerged in the late 1970s to the early 1980s.
Document 7: Purple Rain (film): Purple Rain is a 1984 American rock musical drama film directed by Albert Magnoli, written by Magnoli and William Blinn, and produced by Robert Cavallo, Joseph Ruffalo and Steven Fargnoli. The film stars Prince in his acting debut playing "The Kid," a quasi-biographical character. "Purple Rain" was developed to showcase Prince's talents and contains several concert sequences.
Document 8: Purple Rain (album): Purple Rain is the sixth studio album by American recording artist Prince, the first to feature his band The Revolution, and is the soundtrack to the 1984 film of the same name. It was released on June 25, 1984 by Warner Bros. Records. To date, it has sold over 25 million copies worldwide, making it the third-best-selling soundtrack album of all time.
Document 9: Careless Whisper: "Careless Whisper" is a song by English singer-songwriter George Michael (sometimes credited to "Wham! featuring George Michael" in Japan, Canada and the United States). It was released on 24 July 1984, by Epic Records in the United Kingdom, Japan and other countries, and by Columbia Records in North America. The song was George Michael's first solo single, although he was still performing in Wham! at the time (the song is included on Wham!'s album "Make It Big").
Document 10: George Michael: Georgios Kyriacos Panayiotou (25 June 1963 – 25 December 2016), known professionally as George Michael, was an English singer, songwriter, record producer, and philanthropist who rose to fame as a member of the music duo Wham! He was best known for his work in the 1980s and 1990s, including hit singles such as "Wake Me Up Before You Go-Go" and "Last Christmas", and albums such as "Faith" (1987) and "Listen Without Prejudice Vol. 1" (1990).
Document 11: Upstairs at Eric's: Upstairs at Eric's is the debut album by British synthpop duo Yazoo (known in the US and Canada as Yaz), released in the UK on Mute Records on 20 August 1982. It was produced by the band and E.C. Radcliffe, with assistance from Mute label boss Daniel Miller on some of the tracks. Named after producer Radcliffe's Blackwing Studios where the album was recorded, "Upstairs at Eric's" was preceded by two top three UK singles, the ballad "Only You" and the more uptempo "Don't Go". The singles' success helped "Upstairs at Eric's" reach number 2 in the UK Albums Chart and gain platinum certification for 300,000 copies sold in the UK.
Document 12: I Would Die 4 U: "I Would Die 4 U" is a song by Prince and The Revolution, and the fourth single in the US from their 1984 album, "Purple Rain". The up-tempo dance song was a top 10 hit (the last from the album) in the US, reaching number 8 on the Hot 100.
Document 13: You Spin Me Round (Like a Record): "You Spin Me Round (Like a Record)" is a song by British band Dead or Alive on their 1985 album "Youthquake". The song was the first UK number-one hit by the Stock Aitken Waterman production trio. Released in November 1984, the record reached number one in March 1985, taking 17 weeks to get there. On the US "Billboard" Hot 100, it peaked at no. 11 on 17 August of that year. In 2015 the song was voted by the British public as the nation's 17th favourite 1980s number one in a poll for ITV. Musician and actor Gary Kemp described the song as "one of the best white dance records of all time".
Document 14: Purple Rain (song): "Purple Rain" is a song by Prince and The Revolution. It is the title track from the 1984 album of the same name, which in turn is the soundtrack album for the 1984 film of the same name, and was released as the third single from that album. The song is a combination of rock, R&B, gospel, and orchestral music. It reached number 2 in the United States for two weeks, behind "Wake Me Up Before You Go-Go" by Wham!, and it is considered to be one of Prince's signature songs.
Document 15: Pet Shop Boys discography: The discography of the Pet Shop Boys, an English electronic/pop music duo, comprises 13 studio albums, four compilation albums, two live albums, four remix albums, one extended play and 55 singles. The duo's debut single, "West End Girls", was first released in 1984 but failed to chart in most regions. However, the song was entirely re-recorded in late 1985, and this newly recorded version became their first number-one single, topping the UK Singles Chart, "Billboard" Hot 100 and Canadian Singles Chart. Parlophone Records released the duo's debut album, "Please", in the United Kingdom in March 1986. The album peaked at number three on the UK Albums Chart and was certified Platinum by the British Phonographic Industry (BPI). It also peaked at number seven on the "Billboard" 200 in the United States and was certified Platinum by the Recording Industry Association of America (RIAA). The following summer they released "It's a Sin", the lead single from their second album, "Actually". The single became another UK number one and also reached number nine in the US. This was followed by "What Have I Done to Deserve This?", with Dusty Springfield, which peaked at number two in both the UK and US. In the summer of 1987 the Pet Shop Boys recorded "Always on My Mind", a cover of the Brenda Lee track, and it became their third UK number-one single over Christmas 1987. This was followed by another UK number one, "Heart" in spring 1988. The album "Actually" was released in September 1987, peaked at number two in the UK and was certified three-times Platinum by the BPI.
ground_truth: George Michael.