<human>:  Why did the composer Anna Magdalena Bach write so many pieces for the harpsichord?
<bot>: She was a harpsichordist, and she was married to Johann Sebastian Bach. The harpsichord is a type of keyboard instrument that was popular in the Baroque period, and is similar to a piano in many ways. The harpsichord is a type of clavichord, which was a predecessor to the modern piano.