"Dream Passes by the Windows" (Ukrainian: Ой ходить сон коло вікон, romanized: Oi khodyt son kolo vikon), is a Ukrainian lullaby.
The song is a traditional lullaby for young children, composed of three verses in a minor key. As a folk song, there are many popular versions of both the lyrics and the melody. The first recordings of the lyrics were made in the 19th century. In particular, in the almanac Mermaid of the Dniester in 1837 on page 35, it is marked as "lelial". On page 65 of Nikolai Gatsuk's collection Harvest of the Native Field, published in Moscow in 1857.
Possible "Summertime" connection
When, after a performance, the Ukrainian-Canadian composer and singer Alexis Kochan was asked about the similarity of (the first line of) this lullaby and the melody of George Gershwin's aria "Summertime" (composed in December 1933), Kochan suggested that "Gershwin was deeply affected by the Ukrainian lullaby when he heard it sung by the Koshetz Ukrainian National Choir at Carnegie Hall in 1929 [1926?]."