Ludwig van Beethoven is widely regarded as the father of the Romantic period in music, as his works marked a transition from the Classical period to the Romantic era.

Romantic period music is characterized by an emphasis on emotion and expression, the use of large orchestras, and the exploration of new musical forms.

Richard Wagner is known for his use of leitmotifs, or recurring themes associated with specific characters or ideas, which he employed extensively in his operas.

Robert Schumann's famous piano concerto is known as the Piano Concerto in A minor, Op. 54.

Giuseppe Verdi is known for his opera 'La Traviata', which is based on the play 'La Dame aux Camélias' by Alexandre Dumas fils.

Hector Berlioz's famous symphony is known as the Symphonie Fantastique, Op. 14.

Edvard Grieg, Antonín Dvořák, and Bedřich Smetana are all known for their use of folk melodies and nationalistic themes in their music.

Richard Wagner's famous opera is known as Der Ring des Nibelungen, which consists of four operas: Das Rheingold, Die Walküre, Siegfried, and Götterdämmerung.

Franz Liszt is known for his use of chromaticism and complex harmonies, which can be heard in his piano works and symphonic poems.

Frédéric Chopin's famous piano piece is known as the Nocturne in E-flat major, Op. 9, No. 2.

Johannes Brahms, Anton Bruckner, and Max Reger are all known for their use of counterpoint and fugal writing in their music.

Antonín Dvořák's famous symphony is known as the Symphony No. 9 in E minor, Op. 95, also known as the 'From the New World' Symphony.

Hector Berlioz, Franz Liszt, and Richard Strauss are all known for their use of programmatic music.

Giacomo Puccini's famous opera is known as La Bohème, which is based on the novel 'Scènes de la vie de bohème' by Henri Murger.

Arnold Schoenberg, Alban Berg, and Anton Webern are all known for their use of polytonality and atonality in their music.