 However, in 2006, just a year after his Super Junior debut, Heechul was involved in a car accident which fractured his left leg.The accident left him unable to perform Super Junior's strenuous dances and he has since contributed to the group mostly as a singer.In 2009, Heechul ventured into the soundtrack singing career by releasing his first single "First Star", as part of the soundtrack for the drama "Loving You a Thousand Times".