Complex sentence: He studied music on the Jazz program at Trondheim Musikkonsevatorium (2002), where he started his own Billington Trio including fellow students Andreas Amundsen (double bass) and Hermund Nygård (drums).
Split into simpler sentences: He studied music on the Jazz program at Trondheim Musikkonsevatorium (2002). While at university he started the Billington Trio including fellow students Andreas Amundsen (double bass) and Hermund Nygård (drums).