Mortazavi has collaborated with many dancers and theaters worldwide over the years. In 2008 he composed music for the choreographer Helena Waldmann. In 2011 he was invited by Jochen Ulrich for the ballet performance "Rumi in Flames" at the Landestheater Linz for solo Tombak and Daf with 16 dancers. The piece was always sold out. The Odeon Theater in Vienna uses many of Mortazavi's compositions to produce their own dance performances. In 2013 and 2016 he performed live to various choreographies.