What number of studio album release did U2's Innocence + Experience Tour support?
Innocence + Experience Tour: The Innocence + Experience Tour (styled as iNNOCENCE + eXPERIENCE Tour) was a worldwide concert tour by rock band U2. Songs of Innocence (U2 album): Songs of Innocence is the thirteenth studio album by Irish rock band U2.
i don't know