Here is a list of all guests on the album Haj:
Blå - Vocals by Thomas Öberg and Bass by Magnus Åkermalm
Tar - Guitar by Ingmar Rimheden
Grannens Gräs - Vocals by Emil Jensen
Ramlar - Bass by Magnus Åkermalm
Nöl - Vocals by Simon Gärdenfors
Över - Saxophone by Emma Essinger
Also including sounds from Bjärnum, and the cat Dynamit Harry (see picture).
You can listen here at Spotify!