Complex sentence: By 2011 he became a professor of music at the USC Thornton and have collaborated with such musicians as Sheri Greenawald, Livia Sohn and Jian Wang as well as both Tokyo and Manhattan String Quartets.
Split into simpler sentences: By 2011 he became a professor of music at the USC Thornton. He has collaborated with such musicians as Sheri Greenawald, Livia Sohn and Jian Wang as well as both Tokyo and Manhattan String Quartets.