"Unfinished Sympathy" is a song by Massive Attack. The song originally appeared on the group's 1991 debut album Blue Lines, and was the second single released from the album on February 11, 1991 and got as high as no13 in the UK. It features Shara Nelson on lead vocals, and is generally recognized as a pioneering song in the trip hop genre.
The percussion loop is the "belly break" sampled from a Bob James' cover Take Me…
I know that I've been mad in love before
And how it could be with you
Really hurt me baby, really hurt me baby
How can have a day without a night