Complex sentence: The song is a duet between U2 and B. B. King and during the Lovetown Tour concerts, this song would be played, along with "Love Rescue Me", in an encore featuring B. B. and his band.
Split into simpler sentences: The song is a duet between U2 and B. B. King. During the Lovetown Tour concerts, this song would be played, along with "Love Rescue Me", in an encore featuring B. B. and his band.