First recorded (as “‘Round About Midnight”) by Cootie Williams & His Orchestra (1944).
Also recorded by Dizzy Gillespie & Charlie Parker (1946), Jackie Paris (1949), Thelonious Monk (1947|1957), Sarah Vaughn (1963).
Popular version by Miles Davis (1957).
From the wiki: “By the time Thelonious Monk recorded ”Round Midnight’ as a band leader, in 1947, his composition was already well-known around Jazz circles and was considered a classic. It has since gone on to become the most-recorded Jazz standard composed by a Jazz performer, appearing on more than 1000 recordings. It is thought that Monk originally composed ”Round Midnight” sometime in 1940 or 1941. Historian Harry Colomby, however, claims that Monk could have written an early version of the song around 1936 (at the age of 19) with the title ‘Grand Finale’.