"Twinkle, Twinkle, Little Star" is a popular English lullaby. The lyrics are from an early-19th-century English poem by Jane Taylor, "The Star". The poem, which is in couplet form, was first published in 1806 in "Rhymes for the Nursery", a collection of poems by Taylor and her sister Ann. It is sung to the tune of the French melody "Ah! vous dirai-je, maman", which was published in 1761 and later arranged by several composers, including Mozart with Twelve Variations on "Ah vous dirai-je, Maman". The English lyrics have five stanzas, although only the first is widely known. It has a Roud Folk Song Index number of 7666. This song is usually performed in the key of C major.