The TorbjornZetterberg Hot Five, a Swedish post-bop quintet, is from Sweden. Torbjorn Zetterberg is the upright bass player. It also includes Per “Texas”, Jonas Kullhammar and Ludvig Berghe. While the TZH5 is well-known in Europe, it is not as well-known in North America. Their music is post-bop, incorporating both avantgarde and classic jazz influences. Both Zetterberg and Kullhammar are mainstays in the Swedish jazz scene. Kullhammar, who fronts the Jonas Kullhammar quartet, is an accomplished band leader. They have toured Vietnam from Wikipedia.