Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Richard and Karen's nostalgia craze

Apart from the gigantic hit Yesterday Once More,this set pretty much misses the mark. Karen and Richard's attempt to include a nostialgic 50s and 60s medley that nearly occupies one third of the disc indicates that there wasn't substantial material to begin with.Sing,Heather,This Masquerade,Jambalaya etc. all sound average and without any real substance when compared to Yesterday...which by it's self is a true masterpiece and probably their biggest worldwide hit.True Karen's beautiful vocal chords are angelic and clear ,while Richard's prodution skills are outstanding in their own right.Yet this album 's lightweight nature as compared to previous releases would deter any true music buyer.