Alexander Refsum Jensenius (born November 10, 1978) is a Norwegian researcher and musician.Jensenius is educated in music, computer science, physics and mathematics. He was awarded a Master of Arts degree (cand.philol.) in Music technology by the University of Oslo in 2002, and was awarded a doctorate by the same institution in 2008. In addition he holds a Master of Science degree in applied information technology from Chalmers University of Technology in Gothenburg.