Like "Sarugaku Dangi," this is an extremely important resource, as it contains the words of Zeami himself; but it should be used with caution because the opinion is divided regarding the definition of 'written by XX' and 'composed by XX' notation.
『申楽談儀』同様に世阿弥自身の発言であり極めて重要な資料だが、「○○作」「××曲」の定義については議論が分かれており、注意が必要である。