First recorded by The Paul Whiteman Orchestra (1934).
Also recorded The Raymond Scott Quintette (instrumental, 1939).
Popular version by Louis Armstrong & The Benny Carter Orchestra (1955).
From the wiki: “‘Christmas Night in Harlem’ was written in 1934 by Raymond Scott, and the song was first recorded by The Paul Whiteman Orchestra the same year. ‘Christmas Night in Harlem’ has been covered by Perry Como, Benny Carter, Johnny Mercer, Banu Gibson, The Beau Hunks, Clarence Williams, Paul Whiteman, Maria Muldaur, and Jack Teagarden but the most celebrated recording was made by Louis Armstrong & The Benny Carter Orchestra.