pricksong
/ˈprɪksɒŋ/Now chiefly historical
noun
1Music sung from notes written or pricked, as opposed to music sung from memory or by ear; written or printed vocal music.
2Descant or melody devised to accompany a plainsong or simple theme, or performed as such an accompaniment. Hence more broadly: melody to be performed in counterpoint.
Origin
Late Middle English. From prick + song. Compare prick, and slightly later pricked song.