Høiby established himself as a bassist in London's jazz scene, with performers such as vibes player Jim Hart, saxophonist Mark Lockheart and vocalist Julia Biel.

[1] Høiby formed Phronesis in 2005, and the debut album Organic Warfare (2007) featured Magnus Hjorth (piano).

It was Alive (Edition Records, 2010) that really broke big, gaining rave reviews and Best Album awards from Jazzwise and Mojo.

The American drummer Mark Guiliana took his place temporarily, for the concerts that formed the basis of the album, before Eger returned to the fold.

His reading of, and response to, Naomi Klein's influential book on climate change This_Changes_Everything_ prompted Høiby to found his band Fellow Creatures.