"King of Sorrow" is a song by the Irish musician Sinéad O'Connor, featured on her 1994 album, Universal Mother. The song explores themes of heartache, loss, and emotional pain, reflecting the struggles of love and longing. O'Connor's powerful vocals convey deep sorrow, making the song resonate with listeners. The track is characterized by its haunting melody and poignant lyrics, which highlight the complexities of human emotions. It has been praised for its raw honesty and has become one of O'Connor's signature pieces, showcasing her unique style and ability to connect with audiences through her music.