Premise: Shades 1968–1998 is a 4 CD-Box-Set by the British hard rock band Deep Purple. It was released on 16 March 1999. It spans their career from 1968 to 1998. This box set contains rare edits and singles which are remastered along with album versions of their biggest hits.
Hypothesis: Shades 1968–1998 contains 4 CDs