How are Long song, short song and twist defined and interpreted in Japanese Ye Wan Collection?

Short Song: A form of Japanese peace song, as opposed to Long song. General ***3 1 beat, 5 sentences. The order is five, seven, five, seven. It was formed and shaped around the 7th century.

Long song: A form of Japanese harmony songs, in which pentatonic and heptatonic scales alternate repeatedly and finally end with two heptatonic scales. Usually accompanied by anti-Song.

Rotating song (せどぅか): one of the forms of harmony songs. Japanese poetry written in six sentences of 577577 * * * has strong folk characteristics.