Their Greatest Hits Vols. 1 & 2 includes two of the best-selling albums of all time together in one collection. Eagles are an American rock band formed in Los Angeles, California, in 1971 by Glenn Frey, Don Henley, Bernie Leadon and Randy Meisner. With five number one singles, six Grammies, and six number one albums, the Eagles were one of the most successful recording artists of the 1970s.