The symphony is in four movements and is Mozart's first extant symphony in the key of C major. There is no information concerning which of the many Italian concerts given by the Mozarts during this visit saw this symphony's first performance. The autograph score is preserved in the Biblioteka Jagiellońska in Kraków.

Date of composition 1772 (1769 or 1770 or 1772)
Type Symphony
Tonality C Major
Catalogue KV 73
Instruments Orchestra
Autotranslations beta Wolfgang Amadeus Mozart: Symphonie n°9 en do majeur, KV 73
Wolfgang Amadeus Mozart: Sinfonia n. 9 in do maggiore, KV 73
Wolfgang Amadeus Mozart: Sinfonie Nr. 9 C-dur, KV 73