This is a traditional tune for Mary Had a Little Lamb, edited by Alfred Moffat.
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Links[1] https://nurseryrhymesmg.com/sites/default/files/Mary_Had_A_Little_Lamb_sheet_music.png [2] https://nurseryrhymesmg.com/sites/default/files/sites/default/files/pdf/sheet-music/Mary-Had-A-Little-Lamb.pdf