She also wrote a large number of excellent waka as songs for the koto, and section 171 of the "Okagami" tells an anecdote about the Emperor and Queen Kishi playing the koto together; the "Yakakutei kinsho" reports that priestesses of Ise and court ladies valued playing the koto so highly that they reserved their right hands only for that, and used their left hands only in daily life.
詠歌にも琴にまつわる秀歌が多く、また『大鏡』171段にも天皇と徽子女王の琴をめぐる逸話が語られており、『夜鶴庭訓抄』は斎宮女御が右手を琴を引く手として大切にし、普段は左の手を使ったと伝えている。