With its name indicative of the music's boundary-testing diversity and Southwestern inspiration, On the Border finds the Eagles leaving everything on the table and embracing a harder edge that takes the band out of more relaxed territory and establishes it as a group that knows how – and wants – to rock. Glenn Frey, Don Henley, new member Don Felder, and company immediately announce their intent on the defiant album-opening hit "Already Gone" and never look back, crafting a gem of a record that from start to finish is arguably their most consistent and balanced effort.