Which Eagles album includes the single "Already Gone"?

On the Border is the Eagles album that includes the single “Already Gone.” Released in 1974, it was the band's third studio album and marked an important shift toward a harder, more rock-oriented sound.

“Already Gone” was written by Jack Tempchin and Robb Strandlund, not by the Eagles themselves. It became the album's first single and featured Glenn Frey on lead vocals. The recording also marked one of Don Felder's earliest appearances with the band; he played guitar on the track shortly after joining the Eagles.

The album was produced mainly by Bill Szymczyk after the group moved away from its initial work with producer Glyn Johns. That change helped give “Already Gone” and several other tracks a tougher attack than the band's earlier country-rock material. The album also contained “James Dean” and “Best of My Love,” the latter becoming the Eagles' first US number-one single. The Long Run and One of These Nights are separate later Eagles albums, while Desperado preceded On the Border.