Here's a song from possibly the best album of the Peter Green era of Fleetwood Mac. I definitely gravitate more toward the powerhouse stylings of the McVie/Nicks/Buckingham trio, but I don't want to discredit the output from Green and associates. A lot of the Danny Kirwan material is exceptional as well. Really I can't say a bad thing about the band through their many, many lineup changes until after they broke up and reunited for "Tango in the Night" in 1987. Even that album has some great songs on it (though the production is pretty terrible). What I'm trying to say is, buy every Fleetwood Mac album you can get your hands on.
Anyway, here's "Closing My Eyes" from the 1969 album "Then Play On." It's a sparse, slow heartbreak ballad in the midst of a pretty great blues album (coming from a guy that doesn't like blues). Sadly it was Green's last album with the band as he suffers from schizophrenia and had some serious drug/alcohol problems. He released a few solo albums after his departure, most notably "The End of the Game," featuring a lot of messy guitar heroics.
Fleetwood Mac - Closing My Eyes.mp3
Also for your listening pleasure is the Green instrumental "Albatross," most recently featured in the movie "Man On Wire." John Lennon was such a fan of this song that he implemented the "feel" of it when writing his homage to Green- Abbey Road's "Sun King."
Fleetwood Mac - Albatross.mp3