On the other hand, although outstanding songs whose playwrights are unknown are almost all attributed to Zeami, the major writers Kanami and Motomasa are not included; as such, there are many incorrect descriptions relating to the songs other than those from the same period.
反面、優れた曲で作者不明のものについてはほとんど全てを世阿弥の作とする一方、観阿弥・元雅といった重要な作者が掲載されていないなど、同時代以外の曲については不正確な記述も少なくない。