 While double-reed instruments like the oboe and bassoon became somewhat standardized in the Baroque, the clarinet family of single reeds was not widely used until Mozart expanded its role in orchestral, chamber, and concerto settings.Major composers of this period include Wolfgang Amadeus Mozart, Ludwig van Beethoven, Joseph Haydn, Christoph Willibald Gluck, Johann Christian Bach, Luigi Boccherini, Carl Philipp Emanuel Bach, Muzio Clementi, Antonio Salieri, and Johann Nepomuk Hummel.The music of the Romantic era, from roughly the first decade of the 19th century to the early 20th century, was characterized by increased attention to an extended melodic line, as well as expressive and emotional elements, paralleling romanticism in other art forms.