Leon Redbone

Leon Redbone (born Dickran Gobalian; August 26, 1949 – May 30, 2019) was a Cypriot-American singer, actor and guitarist. He played mostly jazz and blues.
Redbone sang the theme to the television series "Mr. Belvedere". He was a semi-regular musical guest on NBC's "Saturday Night Live" throughout the late 1970s. He last appeared on the show in 1983. During the 1980s and '90s, Redbone was a frequent guest on "The Tonight Show Starring Johnny Carson". He has also been a guest on "A Prairie Home Companion" (radio broadcast). 
Redbone voiced a fake snowman version of himself in the 2003 comedy Christmas movie "Elf".
He retired in May 2015 due to health issues. Redbone died under hospice care in New Hope, Pennsylvania on May 30, 2019 at the age of 69. The cause was problems from dementia.