U2 have already played this one live, as recently as 2004-11-18. It is sure to appear in the setlist, though I am doubtful of whether it will appear full band. The Ground Beneath Her Feet, for example, was always Bono and Edge, and like THTBA, it was performed before its tour.
I would rather hear older stuff but I do think they will play this song live at least some shows based on promo tour set lists. I noticed The Edge played piano only on OOTS at the Brooklyn Bridge gig, which would lead right into HTBA, or if we're lucky Otcober/New Year's Day or Running to Stand Still.
please don't play this song, guys, please....one of the few u2 songs i never got into, plus their catalogue is so great and big, they need to play a lot of HTDAAB songs and theres more important ones to get to.