sentences:  The title line of "Sitting on Top of the World" is similar to a well-known popular song of the 1920s, "I'm Sitting on Top of the World", written by Ray Henderson, Sam Lewis and Joe Young (popularised by Al Jolson in 1926).However the two songs are distinct, both musically and lyrically.Similarities have also been noted between "Sitting on Top of the World" and an earlier song by Leroy Carr and Scrapper Blackwell, "You Got To Reap What You Sow" (1929) or that the melody is from an unidentified song by Tampa Red.