Eagles - Their Greatest Hits (1971–1975) is a singles compilation album by the Eagles , released in 1976. As of November 2012, 29 million copies have been shipped in the domestic market, making it tied with Michael Jackson's Thriller as the best-selling album in the United States. With an additional 13 million internationally, for a total of 42 million, it is the third-best selling album in music history, behind Thriller and Pink Floyd's The Dark Side Of The Moon.