Released on the 2002 compilation Symptom Of The Universe, 'After Forever' stands as a definitive example of Black Sabbath's heavy metal legacy. The track exemplifies the band's signature sound, blending slow, crushing riffs with Ozzy Osbourne's distinctive vocals to create an atmosphere of brooding intensity. As part of the band's extensive discography spanning from their 1970 origins through the 1970s, the song reinforces their status as pioneers of the genre. Its enduring popularity highlights the group's ability to craft anthems that resonate across decades, cementing their influence on heavy music and establishing a template for future rock acts.