Quality rating description:
A+ Excellent Everyone must have this!
A Very Good Great sound quality, only minor crowd noise.
A- Good Everyone would like this, some crowd noise.
A-- Good (Vinyl) Recorded from vinyl, static noise available
B+ Decent Still listenable (with some unwanted noise).
B Bad You really like this band and want to have everything of them.
B- Very bad Might not be listenable anymore.
C Awful Die hard fans only!