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".
Invisible (Christina Grimmie song) "Invisible" is Christina Grimmie’s first posthumous single which was released on Friday, February 17, 2017, by UMG and Republic Records. The song was scheduled to be released on Tuesday, February 14, 2017 but due to Christina getting the major record deal for her posthumous music with her family they decided to release it on Friday, February 17, 2017, for #NewMusicFriday and because every artist with a record deal has to release their new music on a Friday. It was premiered exclusively on Elvis Duran Show on February 16, 2017 alongside the lyric video that was uploaded on Grimmie's official YouTube channel the same day. Later, the single was supplemented with an animated superhero music video on March 10, 2017.