Composed on February 9, 1784, for his pupil, Miss Pleyel, it is called the Concerto No. 1 for Pleyel (the second, K. 453, was composed two months later). The premiere is believed to have taken place on March 17, probably at the casino of Trattnerhof (the building erected by the publisher Trattner), where the Mozarts resided at the time. This was a subscription concert, the “Trattner Casino Concerts,” hosted by Mozart (a type of concert held after soliciting subscribers), and according to a letter to his father, 174 subscribers gathered on this occasion.

At that time, Mozart's popularity in Vienna was growing, and he led a busy life composing, teaching pupils, and giving concerts. Naturally, as his performing activities increased, the number of his compositions also grew immensely. Therefore, with the aim of organizing his own works, he began creating a catalog of his compositions from February of that year. This Piano Concerto No. 14 is the commemorative first entry in that catalog.

The catalog of his works recorded the date of composition, title, instrumentation, and opening theme. Regarding this piano concerto, it also states that the use of the wind instruments (two oboes and two horns) is optional. This means it was arranged so that it could also be performed with strings only.

The cadenza for the first movement by Mozart himself has been preserved.

First Movement: Allegro vivace, E-flat major, 3/4 time. Concerto-sonata form.

The somewhat peculiar unison progression of the opening first theme and the resolute rhythmic figuration in the low strings supporting the simple melody of the second theme create a determined impression. The orchestra and piano maintain a relatively equal standing, making it a somewhat symphonic movement.

Second Movement: Andantino, B-flat major, 2/4 time. Ternary form.

A beautiful slow movement with a smooth, aria-like theme. Considering the sound of the fortepiano of the time, the harp-like arpeggiated accompaniment in the piano's left-hand part must have sounded charming.

Third Movement: Allegro ma non troppo, E-flat major, 2/2 time. Rondo form.

A lively and light finale, animated by staccato. After the Eingangs, the meter changes to 6/8 time, further accelerating. This is a movement where the piano plays a very prominent role.