Instruct: Classify an Amazon review into positive or negative sentiment.
Query: an unsung hero of RnR

John Ashley, although primarily an actor, had a brief career in Rock and Roll,in the late 1950's and early 1960's.his handful of singles on Three or Four different labels are all highly sought after by serious record collectors like me.this is an absolutely essential collection containing every last One of those singles.this had been on my Amazon wish list for well over a year until I had spotted the incredible deal on it from CDsfromKris.it also has a bunch of previously unheard tracks and exclusives from those beach movies he was in with Frankie and Annette,as well as a bonus disc for CD-rom.