The term "swing bands" refers to orchestras or musical groups playing music in the swing genre popular in the 1930s and 40s. Synonyms for swing bands include big bands, jazz orchestras, swing ensembles, dance bands and brass bands. These bands typically feature horns such as trumpets, trombones, and saxophones along with a rhythm section consisting of drums, guitar, bass and piano. They play music that is upbeat, highly rhythmic with a steady swing beat that encourages dancing. Today, swing bands continue to delight audiences and evoke nostalgia for the golden era of swing dance music.