Claim: Welcome to This World is a song that was played as a tease in 1987 and 2003 before it was released in December 2006 and was eventually played as part of an encore during the band’s Winter 2016 tour with Tool—an American rock band formed in 1990.
Evidence: The song had been played as a tease in 1987 (before the song was recorded) and in 2003, however, a live version of the song played in its entirety hadn't made its way onto the internet until December 31, 2006, when a live recording of the song showed up on the internet from the band's performance at Lollapalooza 1993. The song was later played as part of an encore during their Winter 2016 tour with Tool. Tool is an American rock band from Los Angeles. Formed in 1990, the group's line-up includes drummer Danny Carey, guitarist Adam Jones, and vocalist Maynard James Keenan.