It seemed that it was written about shararin, ordinary imayo, kataoroshi, soga, shoseki, taikyoku, ashigara, choka, and tauta (all are kinds of imayo songs).
娑羅林・只の今様・片下・早歌・初積・大曲・足柄・長歌・田歌などについて書かれていたらしい。