Love him or hate him, Ritchie Blackmore was a talented guitarist (albeit with a reputation for being somewhat difficult). He made his mark with Deep Purple before leaving in 1975 to form Rainbow.
This is Deep Purple (Mark Three - David Coverdale (aka Elsie) had replaced Ian Gillan on vocals, Glenn Hughes had replaced Roger Glover) I've always liked this song.
There have been numerous reformations of Deep Purple. Blackmore also resurrected Rainbow for a while. Nowadays, however, he prefers to play twee mediaval-ish, folky stuff with his partner Candice Night:
That was Renaissance Fair. Well I suppose he has made a pile of money so he can do what he likes (and if you like this sort of thing then go ahead and like it!). For me it's just toe curlingly embarrassing fare. And another thing, did he really need to wear that silly hat???