"Taps" is a bugle call played at dusk, during flag ceremonies, and at military funerals by the United States Armed Forces. The official military version is played by a single bugle or trumpet, although other versions of the tune may be played in other contexts (e.g., the U.S. Marine Corps Ceremonial Music site has recordings of two bugle and one band version). It is also performed often at Boy Scout, Girl Scout, and Girl Guide meetings and camps. The tune is also sometimes known as "Butterfield's Lullaby", or by the first line of the lyric, "Day Is Done". The duration may vary to some extent; the typical recording below is 59 seconds long.