Best of Hits?


When you see a CD that is a compilation and/or best of artists, are those the same exact tracks the artists released for original hits? I know there can be several "takes" in recording studio so not sure if best of equal same as original hit.

Thanks

Awooof
 
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There is no rule that says  its exactly the same as any prior releases.   It may be in many cases but also may be different case by case.  
Most-likely no.
Every released record has it's own 'master' who put tracks together. In case of compilation it's master 'A' and in case of album it's another master.