1. John Adams: Adams is an American composer known for his minimalist style and use of unconventional instruments. His works include "Harmonielehre," "Nixon in China," and "The Death of Klinghoffer."
2. Thomas Ades: A British composer and conductor, Ades's works often combine elements of classical, jazz, and electronic music. Notable compositions include "The Tempest," "Asyla," and "Polaris."
3. Kaija Saariaho: A Finnish composer, Saariaho's music is known for its spectral qualities and atmospheric textures. Her works include "L'Amour de Loin," "Orion," and "Only the Sound Remains."
4. Esa-Pekka Salonen: A Finnish composer and conductor, Salonen's works often explore themes of nature and human emotion. His compositions include "Wing on Wing," "Nyx," and "Concerto for Violin and Orchestra."
5. Caroline Shaw: An American composer and vocalist, Shaw's works blend classical, folk, and experimental elements. Notable compositions include "Partita for 8 Voices," "The Orchard," and "Narrow Sea."
You can listen to works by these and other contemporary classical composers on various streaming platforms, such as Spotify, Apple Music, and YouTube Music. Additionally, many contemporary classical music pieces are available on the websites or YouTube channels of the composers themselves or their publishers.