The "Invisible" single was released in 2014 as a free digital download to all iTunes users worldwide in partnership with Apple. It was the lead single from their 2014 album Songs of Innocence.
- The song "Invisible" was produced by Danger Mouse and was co-produced by Paul Epworth.
- The single was released on February 2, 2014, and was available for free download for a limited time.
- Songs of Innocence was U2's first album of new material in five years.
U2 is an Irish rock band that was formed in Dublin in 1976. They are one of the best-selling music artists of all time.
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