Thus Köchel, in the first edition of his Mozart catalog (1862), gave the hypothetical date 1779, later clarified by Georges de Saint-Foix (1936) to "Salzburg, beginning of January–March 1779."

However, Alfred Einstein, in the third edition of the Köchel catalog (1937), said it was composed in "late summer 1778 in Paris."

On the basis of Mozart's script, Plath assigns the piece to the time around 1783/84, "likely not long before the appearance of the first print."

Furthermore, Tyson convincingly demonstrates through paper tests that the work was composed at the end of 1783, likely in November, around the same time as the "Linz Symphony", K. 425, when the Mozart couple made a stopover in Linz on their way back to Vienna from Salzburg.

The second movement is marked Andante cantabile and is also in sonata form, but in the subdominant key of E♭ major.

The third movement, a sonata-rondo, shows much similarity to the first by chord pattern and by music phrases.

Then comes a series of arpeggios which lead to a short pause preceding the final repeat of the first theme with accompaniment variations, ending the piece.

The third movement of this piece is often used for hold music while calling a customer support line.