Invisible was a song later included as a hidden track on which thirteenth U2 album?
Invisible (U2 song) "Invisible" is a song by Irish rock band U2. Unveiled in a Super Bowl XLVIII television advertisement, it was available as a free digital download through the iTunes Store from 2–3 February 2014. Bank of America gave $1 for each download of the track to (RED), an organisation co-founded by Bono, to fight AIDS. Since 4 February, it has been available as a paid download, with all the proceeds also going to (RED). The song was later included as a hidden track on the deluxe edition of the group's 2014 studio album "Songs of Innocence".
U2 U2 are an Irish rock band from Dublin formed in 1976. The group consists of Bono (lead vocals and rhythm guitar), the Edge (lead guitar, keyboards, and backing vocals), Adam Clayton (bass guitar), and Larry Mullen Jr. (drums and percussion). Initially rooted in post-punk, U2's musical style evolved throughout their career, yet has maintained an anthemic sound built on Bono's expressive vocals and the Edge's effects-based guitar textures. Their lyrics, often embellished with spiritual imagery, focus on personal and sociopolitical themes. Popular for their live performances, the group have staged several ambitious and elaborate tours over their career.