The first movement opens with the orchestra playing the main theme, marked “Allegro aperto”. The “aperto” marking on the first movement is rare in Mozart's instrumental music, but appears much more frequently in his operas. It implies that the piece should be played in a broader, more majestic way. The solo violin comes in with a short but sweet dolce adagio passage in A major with a simple accompaniment by the orchestra, the only instance in Mozart's concerto repertoire in which an adagio interlude of this sort occurs at the first soloist entry of the concerto.