Since I'm saving the infamous "Moon River" for a Movie Themes Series (coming soon), here are two other tunes Williams performed on his variety show. From 1965, here's Williams singing the mellow tune "Try to Remember" from the 1960 musical The Fantasticks (a hilarious show I've performed in myself!).
Originally an instrumental hit for Bob Crewe in 1967, here's Williams' version of "Music to Watch Girls By," which reached #34 in the US later that same year, eventually reaching the Top-10 as a re-released single after its use in a Fiat commercial in the UK.
Another sad loss to the music industry and entertainment business, Mr. Williams will be greatly missed.