Songs in The Key of Life (1976)

Balance is the key element of the Eagles' self-titled debut album, a collection that contains elements of rock & roll, folk, and country, overlaid by vocal harmonies alternately suggestive of doo wop, the Beach Boys, and the Everly Brothers. If the group kicks up its heels on rockers like "Chug All Night," "Nightingale," and "Tryin'," it is equally convincing on ballads like "Most of Us Are Sad" and "Train Leaves Here This Morning." The album is also balanced among its members, who trade off on lead vocal chores and divide the songwriting such that Glenn Frey, Bernie Leadon, and Randy Meisner all get three writing or co-writing credits…