Guitarist and keyboardist for the pop band A-ha, the group that released the #1 single "Take on Me."
He was raised in Norway, where his father was killed in an airplane crash in 1967. He was in the band Bridges with fellow A-ha bandmate Paul Waaktaar-Savoy.
He produced solo work like Timbersound.
His father was a jazz musician who played trumpet.
He founded A-ha with Morten Harket and Paul Waaktaar-Savoy.