むすんでひらいて（主旋律12小節）伝：ルソーPublic domain melody; newly encoded by ふたり音Public-domain melody independently engraved. Modern reference: Kodomo MusiQ, Musunde Hiraite (2023), single melody PDF via https://kodomomusiq.com/score04-musunde/ . C major, 4/4, 12 bars, 48 beats, 58 notes; no rests, ties or repeat signs. A-B-A written out. Pitch and duration retained; quarter=96 is an editorial practice setting. No source PDF, images, illustrations, lyrics, fingering, accompaniment or recordings redistributed. All 58 melody notes also match Yamaha Puratomo duet melody after regrouping 24 bars of 2/4 and normalizing octave indication. Historical comparison: Shogaku Shokashu Shohen, publication notice Nov.1881, no.13 Miwataseba, NDL pid992051, image13 right-hand page, https://ndlsearch.ndl.go.jp/books/R100000039-I992051 ; also Hiroshima University 1889 edition, IIIF canvas p11, https://dc.lib.hiroshima-u.ac.jp/da/ja/2956 . Historical rhythm, rests and repeat structure differ and are not used for practice.Melody20majorG2quarter96E42quarterE41eighthD41eighthC42quarterC42quarterD42quarterD42quarterE41eighthD41eighthC42quarterG42quarterG41eighthF41eighthE42quarterE42quarterD41eighthC41eighthD41eighthE41eighthC44halfE42quarterE41eighthF41eighthG42quarterG42quarterA42quarterA42quarterG41eighthF41eighthE42quarterE42quarterE41eighthF41eighthG42quarterG42quarterA42quarterA42quarterG44halfE42quarterE41eighthD41eighthC42quarterC42quarterD42quarterD42quarterE41eighthD41eighthC42quarterG42quarterG41eighthF41eighthE42quarterE42quarterD41eighthC41eighthD41eighthE41eighthC44half