80s

1) American one-hit wonder pop group from Florida. They released an album in 1969 entitled Mercy - Love Can Make You Happy; this peaked at #38 on the U.S. Billboard Hot 200 chart[1] as a result of the success of their hit single, "Love (Can Make You Happy)". The tune spent two weeks at #2 on the U.S. Billboard Hot 100 singles chart, and also peaked at #2 on the Adult Contemporary chart. 2) Metal band from Sweden. The death of its remaining member in 2005 ended the group, which generally passed unnoticed.

There are more bands with this name: 1) Satan (UK) was an nwobhm band formed in 1979.
Satan would change their name to Blind Fury after the release of their debut Court in the Act in 1983. The former singer Brian Ross was replaced by Lou Taylor who was in Satan once before and himself was also, ironically, replaced by Brian Ross.
After they released Out of Reach in 1985, they changed their name back to Satan and Michael Jackson (no, not that Michael Jackson...) joined on vocals.

Leslie Phillips is the name of more than one artist. (1) Leslie Phillips (b. January 28, 1962) is an American Christian singer and songwriter, who later recorded under the name Sam Phillips. One of her Christian market albums, The Turning, has been reissued under the Sam Phillips name. (2) Leslie Samuel Phillips OBE (b. April 20, 1924) is an English comedy actor, born in Tottenham, London. Phillips made his first film appearances in the 1930s, but it wasn't until the 1950s that he became famous for playing amusing English stereotypes.

1. John Paul Young, is an Australian pop singer, known primarily for his worldwide hit Love Is In The Air. Born on June 21, 1950, in Glasgow, Scotland, his family relocated to Sydney when he was aged 11. After forming the band Elm Tree with schoolmates in 1967, he was discovered by renowned talent manager Simon Napier-Bell, who convinced his to sign as a solo artist with Albert Productions. It was here he began his long association with songwriters and record producers Harry Vanda and George Young of The Easybeats.