Enjoy this brief interview with Larry Mullen, aired at halftime of Knicks/Hawks game at Madison Square Gardens, New York on March 4.

The Observer’s Sean O’Hagan, a long time friend of the band, spent 18 months following them from Fez to Dublin, as they recorded New Line On The Horizon.

He’s captured his travels on film and in part one of this exclusive – but brief- footage the band begins sessions in a converted riad in Morocco.

Watch the video on guardian.co.uk

In part two, available on guardian.co.uk next week, U2 continue recording in Dublin, New York and London, and you can read the full interview and story of the album in next week’s Observer Music Monthly.