What is who originally sang southern nights?

"Southern Nights" is a song written and originally performed by Allen Toussaint. The song was first released by Toussaint in 1975 on his album "Southern Nights." However, the most famous and commercially successful version of the song was recorded by Glen Campbell in 1977, reaching #1 on both the Billboard Country and Pop charts. Campbell's version of the song features a more upbeat arrangement with added instrumentation and backing vocals.