section_path: Works, musical style, and innovations/Instruments
section_name: Instruments
paragraph_text: Instruments
  
  Although some of Mozart's early pieces were written for harpsichord, he also became acquainted in his early years with fortepianos made by Regensburg builder Franz Jakob Späth. Later when Mozart was visiting Augsburg, he was impressed by Stein fortepianos and shared this in a letter to his father. On 22 October 1777, Mozart had premiered his triple-piano concerto, K. 242, on instruments provided by Stein. The Augsburg Cathedral organist Demmler was playing the first, Mozart the second and Stein the third part. In 1783 when living in Vienna he purchased an instrument by Walter. Leopold Mozart confirmed the attachment which Mozart had with his Walter fortepiano: "It is impossible to describe the hustle and bustle. Your brother's pianoforte has been moved at least twelve times from his house to the theatre or to someone else's house."