Relatively unknown in the UK, New Politics from Copenhagen, Denmark open the show. With the venue not yet even half full, their audience is small and largely disinterested, not helped by vocalist David deciding mid-set to perform a random break-dance routine.Taylor Momsen and The Pretty Reckless fair better. With the arena inching closer to capacity, kicking things of with ‘Follow Me Down’ from their newly released album ‘Going To Hell’ makes for a good start. The stage lighting, notably the flashing white lights at the front and the spotlight Taylor stands under, combined with her repetitive shouts of “Manchester!” become more and more irritating as the set goes on. Things are rescued however with the performance of fan-favourite ‘Make Me Wanna Die’, hundreds upon hundreds of people screaming back every word.Wearing masks through opening number ‘The Phoenix’, Fall Out Boy instantly have almost every single attendee before them on their feet, clapping and cheering. Not even a quickly rectified power problem can stop things and ‘This Ain’t A Scene’ soon sees thousands arms being thrown back and forth, voices echoing around the vast space as they sing along.A short acoustic set, performed towards the back of the venue makes for a nice break and upon returning to the main stage, with the lights dimmed for ‘Just One Yesterday’, the arena becomes a glittering sea.The inclusion of ‘My Songs Know What You Did In The Dark’ and ‘Thanks For The Mmrs’ go down spectacularly well as the set draws to a close, and, exiting the stage to huge cheers and applause, Fall Out Boy can without question say they put on a thoroughly entertaining, truly great show.