Which popular classical composer is known for the piece "Moonlight Sonata"?

The piece "Moonlight Sonata," formally known as Piano Sonata No. 14 in C-sharp minor, Op. 27, No. 2, is one of the most famous works composed by Ludwig van Beethoven. It was completed in 1801 and has since become emblematic of the Romantic era in classical music, despite being written during the transition from the Classical to Romantic periods.

Beethoven's "Moonlight Sonata" is particularly celebrated for its emotional depth and innovative structure. The first movement, marked Adagio sostenuto, showcases a lyrical melody that conveys a sense of tranquility and introspection, which is reflective of the title often associated with moonlit nights. The entire sonata consists of three movements, with the first being the most recognized and beloved by audiences.

By understanding Beethoven's contribution to music and the characteristics of the "Moonlight Sonata," it becomes clear why he is the correct answer regarding this iconic composition.