What We Must is the fourth studio album by the Norwegian band Jaga Jazzist.

It was recorded by Mario Thaler in Uphon Studios, Germany July 2004, by Marcus Schmickler in Piethopraxis, Germany August 2004 and by Mike Hartung and Kåre Christoffer Vestrheim in Propeller Music Division, Norway October–December 2004.

Mixed by Kåre Christoffer Vestrheim and Mike Hartung in Propeller Music Division, December 2004.

Design of the album by Kim Hiorthøy and, to lesser extent, by Harald Frøland and Andreas Hessen Schei.

[7] All music arranged by Jaga Jazzist with Kåre Christoffer Vestrheim and Marcus Schmickler.