We mark the completion, on August 10, 1788 – 232 years ago today – of Mozart’s Symphony in C major, catalogued by Ludwig Köchel as K. 551 and nicknamed the “Jupiter”. It was Mozart’s final symphony, a towering, innovative masterwork, the greatest symphony ever composed to its time and by any standard of measure one of a handful of greatest symphonies ever composed. That it took Mozart all of 16 days to commit it to paper defies our imaginations. That it was composed back-to-back with the luminous, transcendentally lyric Symphony in E-flat major and the tragic, gut-busting Symphony in G Minor in something under a total of eight weeks beggars our belief. Finally, that Mozart managed this mind-blowing compositional feat while under a black cloud of grief, physical ill-health, and mounting financial disaster is just, well, inconceivable.