The Eagles 1976's release Their Greatest Hits 1971-75 has recently become the biggest selling album of all-time topping Michael Jackson's Thriller. The album has moved a staggering 26 million copies and the fact that people are still consistently buying it 24 years after its release is a testament to the timeless nature of the songs. The songs are mostly in the country-rock vein from the wistful "Peaceful Easy Feeling" to the two-timing tale "Lyin' Eyes" to the supple number one hit "Best Of My Love". There are some harder number like the evil & dark sounding "One Of These Nights" and the smoldering "Witchy Woman". The band's success can be tied into the fact that Glenn Frey & Don Henley are extraordinary songwriters, the band are perfectionists in the studio, so their songs are painstakingly produced, Bernie Leadon, Randy Meisner and later Don Felder all are excellent musicians and they make picture perfect harmonies. An essential album.