There are more than one artist with this name: 1) Midnight Sun is a heavy metal band from Sweden.
............ 2) Midnight Sun was a Danish rock band in the 1970's.
Denmark's Rainbow Band was formed in late 1969 as a supergroup consisting of Peer Frost (ex-Young Flowers), Lars Bisgaard (ex-Maxwells), Carsten Smedegaard (ex-Beefeaters), Bent Hesselmann and the former jazz players Niels Brønsted and Bo Stief (they had backed American jazz musicians at Copenhagen's Café Montmartre).

Read more about Midnight Sun on Last.fm.