Some people might not realise that Fleetwood Mac was a blues band which morphed into a progressive blues rock band before they hit the big time with Stevie Nicks et al. The original band had great guitarists: not only Peter Green, but also Jeremy Spencer and Danny Kirwan.
Danny Kirwan went on to have a significant role in the early evolving Fleetwood Mac: singing, playing guitar, composing and arranging. This is one of his early efforts off the 'English Rose' album. It was also the 'B' side to the single 'Albatross' (at least here in Australia). It was recorded on 6 October 1968, and is a great guitar instrumental (perhaps with some Django influence) which has been very popular with guitarists, as evidenced by the cover versions on You Tube.
This song was adapted from the tune of the same name done by Eddie Lang and Joe Venuti. See my slideshow video of this tune on my channel here :
In particular check out Jimmy Dorsey's clarinet solo around the 2 minute mark.
I have put this slide show together as a tribute to Danny, the early Fleetwood Mac, and guitarists everywhere. UPDATE: Just notified by a comment on this video that Danny died on 8 June 2018 at the age of 68. R.I.P. Danny.