The collection spans two discs (with a rare third-disc limited edition) featuring 37 to 42 tracks depending on the region.

The compilation was released by Polydor internationally and MCA in the U.S.. It arrived at a poignant time, coinciding with the band's 2002 U.S. tour—the same tour during which founding bassist John Entwistle passed away.

is one of the most significant career-spanning compilations for the legendary British rock band. Released in June 2002, this set was designed to be the definitive summary of their power, covering hits from 1964 to 1982.