Great band! One of the best heavy metal bands of all time alongside Led Zeppelin, Mountain, Deep Purple, Uriah Heep. Forgotten and dusty, but still a classic. The first 3 discs of Buffalo are mandatory who want to understand the roots of metal. Impressive as the first generation of metal is higher than the second, the NWOBHM is not enough at the foot of the first generation bands like Buffalo, Zeppelin, Purple Mountain.