"All the Pretty Little Horses", also known as "Hush-a-bye" is a traditional lullaby. The song is commonly thought to be of African-American origin. It is very well known among lullaby singers both black and white. The author Lyn Ellen Lacy is often quoted as the primary source for the theory that suggests the song was "originally sung by an African American slave who could not take care of her baby because she was too busy taking care of her master's child. She would sing this song to her master's child". One such version of "All the Pretty Little Horses" is provided in Alan Lomax's American Ballads and Folksongs. The second verse seems to support this theory. For people who understand the imagery of the second verse it can be frightening but, fortunatly, infants never notice. The melody is simple with only two strains in an AABA pattern appropriate for use as a lullaby. The song was printed in John and Alan Lomax's Best Loved American Folk Songs (1937). It was recorded by Joan Baez, The Journeymen, Judy Collins, Kenny Loggins, Peter, Paul and Mary, Odetta and many others.