 A family friend, the poet Johann Andreas Schachtner, recounted that at the age of four Wolfgang began to compose a recognisable piano concerto, and was able to demonstrate a phenomenal sense of pitch.Nannerl herself was an apt pupil, no less quick to learn than her brother, and was playing the keyboard with striking virtuosity by the time she was eleven.In that year, 1762, Leopold brought the children to Munich to play before Maximilian III Joseph, Elector of Bavaria.