Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Buyer beware.

Having been intrigued by this disc for quite some time, I finally went out and bought it. The main reason this disc looked appealing was the Pigpen/Janis duet. However, in the end, I shouldn't have bought this disc. There is a LOT of background noise to the songs on this disc, though the song selection is superb.Another thing that irked me about this disk was the complete lack of liner notes. The only this disc says about the music on here, is: what bands sing what songs, and that this music was recorded live on campuses in the 60s and 70s. I personally would have liked some info on the Joplin/Dead combo, but like the disc as a whole it was another disappointment.In the end, this disc sounds like a bad Grateful Dead bootleg, so if you like those, then I guess you will enjoy this disc.