Editing Double whole note (section)

==Form==
In modern notation, a breve is commonly represented in either of two ways: by a hollow oval [[note head]], like a whole note, with one or two vertical lines on either side, as on the left and right of the image, or as the rectangular shape also found in older notation, shown in the middle of the image.{{sfn|Jacob|1960|p=21}}{{sfn|Read|1969|p=459}}

Because it lasts longer than a [[bar (music)|bar]] in most modern [[time signature]]s in common use, the breve is rarely encountered except in [[Music of the United Kingdom|English music]], where the half-note is often used as the beat unit.{{sfn|Gehrkens|1914|p=11}}