Which President Played A Musical Instrument On National American TV (while he was a candidate)?

During the 1992 US presidential election campaign season, candidate Bill Clinton was a guest on The Arsenio Hall Show late-night national TV show on 3 June 1992. He donned sunglasses and played a pretty-good version of "Heartbreak Hotel" on the saxophone with the show's band. Clinton went on to beat Republican President George H. W. Bush and win the election. President Barack Obama (44th US president) did an amazingly-good impression of Al Green singing "Let's Stay Together" during a fund raiser at the Apollo Theater on 19 Jan 2012. If you would like to hear these, search for Clinton sax Arsenio and Obama Green Apollo and choose YouTube in the results.