Piano Sonata No. 15, also known as the "Pastoral Sonata," is a composition by Wolfgang Amadeus Mozart written in 1784. It is part of his collection of piano sonatas and is notable for its lyrical melodies and gentle character. The sonata consists of three movements: Allegro, Andante, and Allegro, showcasing a blend of playful and serene themes. The first movement features a lively and cheerful theme, while the second movement offers a more reflective and calm atmosphere. The final movement returns to a spirited tempo, concluding the sonata with energy and joy. This work exemplifies Mozart's mastery of piano composition and his ability to convey emotion through music.