Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Boston Box - a great investment

If you are a Peter Green Fleetwood Mac fan and a lover of live music, you must purchase this boxed set.For an early 1970 recording, the sound is excellent. The band is having fun on stage and the music is vibrant and enjoyable. For those of you who enjoy "Then Play On" - many of the songs on that album are represented here live. The sound is light years above the previously released CDs which make up a partial representation of this boxed set. Well worth the investment. What are you waiting for? Get it...