the a major sonata is unique among mozart's piano sonatas. it does not include a movement in sonata form. the first movement is a lilting theme in 6/8 followed by six variations in a major and a minor. the last variation is in 4/4 time. the second movement is a menuetto in a major with a contrasting section (called a trio) in d major. it is written in 3/4 time. the third and final movement is the famous "alla turca" (turkish march or turkish rondo) in 2/4 time. it is considered one of the finest examples of viennese turkish music that was produced in the late 18th century. the rondo's rolled block bass chords suggest the drum rolls of a turkish janissary band. in true classical style, the rondo alternates between major and minor keys, and loud and soft dynamics. the piece is a favorite for amateur recitals.