Don Henley and Glenn Frey first worked together in 1971 as members of Linda Ronstadt’s back band. They eventually recruited a few more members and formed the Eagles.
I first saw the group when they were supporting their second album as the warm-up act for Procol Harum in the Summer of 1973. They had been touring mostly in the Northeast, and their mild country-pop music probably was a bit jarring to the crowds that showed up for Procol Harum. Their performance in Nashville was greeted with a lot of enthusiasm, and the group was clearly cheered by the reception.
The Eagles did fairly well in the rest of the seventies but splintered and broke up in 1980. Don began recording solo albums. His first album, I Can’t Stand Still, only spawned one hit record (Dirty Laundry).
His second album, Building The Perfect Beast, came out in 1984 and spawned four very successful singles. Boys Of Summer and All She Wants To Do Is Dance both hit the top ten on the pop charts and number 1 on the Rock Albums Top Tracks chart.
Not Enough Love In The World was the least successful of the four singles, only reaching #34 that Summer. The song was co-written with his frequent co-writer, guitarist Daniel Kortchmar, and keyboardist Benmont Tench (one of the founding members of Tom Petty and the Heartbreakers).
Wikipedia repeated the rumor that the song was written about Don’s relationship with Stevie Nicks of Fleetwood Mac (which blossomed and faded in the late seventies). The record must have been somewhat important to him since he chose to perform the song live years later on the Letterman show when fans might well have expected to hear one of his bigger hits.
Don continued to release new albums and singles through most of the nineties. In 1994 Hell froze over and the Eagles finally reunited and hit the road again.