Also, MINAMOTO no Hiromasa repeatedly visited Osaka for three years and on the night of August 15 (old calendar) was finally initiated into the esoteric music of biwa, "Ryusen" and "Takuboku" ("Konjaku Monogatari shu " - The Tale of Times Now Past).
また、源博雅が逢坂に3年間通いつづけて遂に8月15日(旧暦)夜に琵琶の秘曲『流泉』『啄木』を伝授されたともいう（『今昔物語集』）。