"Ryura Hikan" (Secret book of playing the hora, conch-shell trumpet) by Ryuen HONMA, of Tozan School of Sanboin of Daigoji Temple, which was published in the early Showa period, has been recognized as an indispensable text and handed down to later monks, especially those who train shell trumpet players.
昭和初期に発表された醍醐寺三宝院当山派本間龍演師の『立螺秘巻』は、その後の修験者、とりわけ吹螺師を修行する者の必須テキストとして評価伝承されている。