Kullhammar is also an accomplished band leader in his own right, fronting the Jonas Kullhammar Quartet. The group has toured Vietnam, Germany, Greece, Norway, Canada, Denmark and Sweden.
The passage describes Jonas Kullhammar as a skilled musician and bandleader who leads his own quartet, the Jonas Kullhammar Quartet. The group has toured internationally to various countries including Vietnam, Germany, Greece, Norway, Canada, Denmark, and Sweden.