Symphony No. 94 "Surprise" and Symphony No. 104 "London" are orchestral symphonies by Joseph Haydn, composed in 1791 and 1795 respectively. Both exemplify Haydn's mature Classical style with balanced structures, clear orchestral textures and playful rhythmic and dynamic devices, and they occupy a central place in his late output — the earlier work is characterised by an abrupt dynamic contrast within a slow movement, while the later work reflects the expanded orchestration and formal refinement of the London symphonies that influenced subsequent symphonic practice.
