He wrote piano music, solo (with piano accompaniment) pieces for violin and cello. He wrote pieces with orchestral accompaniment for piano, violin, and cello. He wrote chamber music for string quartet and for piano trio (piano, violin and cello). Most of his music is orchestral and operas.
The piano.
When Billie Joe was writing the songs for the upcoming album, he wrote most of them with a piano instead of a guitar.
Most of Clara Schumann's works were for or included her instrument, the piano. She wrote a concerto and a piano trio, very much solo piano music and songs for voice with piano accompaniment. She also wrote some choral music. As she grew older she wrote less, and produced no works after the age of 36. She devoted most of her life to her husband, Robert Schumann's music.
Franz Schubert was a pianist. He wrote 14 sonatas, 11 impromptus and sets of variations for solo piano. Most of his songs are composed for piano and voice.
Claude Debussy wrote this piece Clair De Lune.It was also his most famous composition.
the pathetique sonata
I've played piano for 11 years. In my experience the composer who wrote the most complex, beautiful harmonies is Gabriel Faure. I think the French romantic composers in general made the most complex harmonies.
He most likely wrote it as a gift to his teacher Jozef Elsner for whom it is dedicated.
He wrote music for many instruments, but perhaps his most famous instrumental work is for the piano.
Piano
Robert Schumann composed one piano concerto, the Piano Concerto in A minor, Op. 54, which was completed in 1845. This work is widely regarded as one of the most significant piano concertos of the Romantic era. While he wrote other orchestral works, the A minor concerto remains his sole piano concerto.