sentences:  According to Elvis Presley's Enterprises, and as noted in Graceland's official page, the tour guide staff did informally keep a list of celebrities, from every walk of life, who had visited in the first years following Elvis death, although this practice only became formal a decade later.One of the first who visited was Muhammad Ali who did so in 1978, and Paul Simon, who toured Graceland in the early 80s and afterwards wrote a song which became the title track of his Grammy winning album "Graceland".On June 30, 2006, when US President George W. Bush hosted Japanese Prime Minister Junichiro Koizumi for a tour of the mansion, it became one of a few residences on American soil other than an Embassy, the White House, or any of the other Presidential retreats to have hosted an official joint-visit by a sitting US president and a then current head of a foreign government.