By the middle of 1788, at the age of 32, Mozart had reached the height of his creative maturity, dominated by the last three symphonies, absolute masterpieces that he composed in a very short period of time – barely one and a half months. This extraordinary “symphonic massif” consisting of three peaks – Symphony No. 39 in E-flat major, completed on 26th June, Symphony No 40 in G minor, completed on 25th July and Symphony No. 41 in C major, the “Jupiter”, dated 10th August – is unquestionably the composer’s “Symphonic Testament”.