The Piano Concerto no. 23 in A major (KV 488) was finished, according to Mozart's own catalogue, on March 2, 1786, around the time of the premiere of his opera, The Marriage of Figaro. It was one of three subscription concerts given that spring and was probably played by Mozart himself at one of these. The concerto is scored for strings, one flute, two clarinets, two bassoons, and two horns.
[Source of this extract: Wikipedia]