Joseph is the founder of the Robbins Island Music label. His solo career began when he independently released "Hear the Masses," featuring many of his Yanni bandmates. This debut was followed by "Rapture", an instrumental album recorded with a 50-piece orchestra in which Joseph wrote and conducted all of the scores. It was released on the Narada label and reached ZMR Airwaves Top 30. A number of subsequent recordings including "Christmas Around the World" and "One Deep Breath" also held positions on ZMR's Top 100 radio chart, with the most recent being "Paint the Sky" which debuted at #15 in April 2013. "Paint the Sky" was nominated for Best Neo-Classical Album in the 10th annual ZMR Music Awards. He has produced numerous CDs/DVDs and piano books. His music is included in multiple various-artist compilation albums including the 2008 release of "".