Si Beagh si Mor is attributed to the Irish bard and composer Turlough O’Carolan (1670-1738). The song takes its title from two burial mounds, one large and one small, in the area where O’Carolan lived in Ireland. In Irish tradition, barrows are inhabited by fairies, so there are also readings that the title is about two fairies, one large and one small. Jack Isodore made this guitar arrangement.