There should be no need for explanation here. Because "Liege & lief" is one of the best albums of all time, the masterpiece of folk-rock, or british way to folk-rock, played by a band at its peak and at its most painful time (if you don't know much of the story that led to L&L read this).
Anyway, this was Fairport Convention's 4th long playing release and, as hard as it appeared to be, it topped also their previously LP, "Unhalfbricking", and it made history for Sandy Denny's perfect vocal performance and its combination of tradionals mostly and self-penned songs (or new suits for traditional songs, with new lyrics for instance).
What else: Richard Thompson may be the best british guitar player ever (sorry for all Eric Clapton fans, by the way)
In a few words:one of my desert island discs.
Plus, this is the 2002 edition, with 2 bonus tracks.
"Liege & lief" @ Wiki
Fairport Convention @ Wiki
Liege & Lief