Tim Hopgood is the illustrator of What a Wonderful World, Moon River, Singing in the Rain, Walking in a Winter Wonderland, and many other popular picture books. He lives with his family in North Yorkshire, England.

Johnny Mercer (1909-1976) was the Academy Award-winning songwriter and lyricist of "Moon River" (music by Henry Mancini, from the film Breakfast at Tiffany's), "Days of Wine and Roses" (music by Mancini, from the film of the same name), and many more.

Mercer also worked as a lyricist with such composers as Harold Arlen, Hoagy Carmichael, and Duke Ellington, among others. After his death, his widow gave some of his unfinished lyrics to Barry Manilow to create complete songs.

Henry Mancini (1924-1994) was a multiple Academy Award and Grammy Award-winning composer, known best for his film and television scores including "The Pink Panther," "Moon River" (with lyrics by Johnny Mercer, from Breakfast at Tiffany's), and "Peter Gunn." He also received a Golden Globe and a posthumous Grammy Lifetime Achievement Award in 1995.