Two Voices and Twelve Strings Strong. The acoustic rock and folkified pop from the rising star of Fondy emits northern soul. The foundation of Northsoul has Travis Worth on upright bass and vocals, Trevor Lindgren on mandolin and vocals. Travis and Trevor are Fond du Lac, Wisconsin natives with a rich and varied history of collaboration. Northsoul can be found in all sorts of venue arrangements, engaged in a quest to make positive impact and foster community.