This is the best (current) compilation of Canned Heat. This 2 CD set has most of the best tracks from their classic period between 1967 to 1971.
The influence Alan Wilson had on the band with his slide guitar and amazing harmonica work is the highlight to me. The best songs are the ones that have Wilsons blazing harmonica work such as On The Road Again, Sugar Bee, Fannie Mae, The Owl Song and my favourite Canned Heat song Help Me with the most emotional harmonica solo I have heard.
This compilation includes some rarities such as Terraplane Blues and a few early demos from 1967. Also included are some promos advertising some early Heat albums.
The booklet is great, lots of good reading and a well compiled discography as well.
Overall this is a great set of most of the best moments from Canned Heat 1967 to 1971
Their later work is very different but still rooted into the blues.