(n.) One who makes a libretto.

Meistersinger Parnassian arch-poet arranger ballad maker balladeer balladist balladmonger bard beat poet bucoliast choreographer comedian composer contrapuntist dramatist dramatizer dramaturge elegist epic poet ethnomusicologist farcer farceur farceuse farcist fili gagman harmonist harmonizer hymnist hymnographer hymnologist idyllist imagist joke writer jokesmith jongleur laureate madrigalist major poet maker melodist melodizer melodramatist mimographer minnesinger minor poet minstrel modernist monodramatist musicographer musicologist occasional poet odist orchestrator pastoral poet pastoralist play doctor play fixer playwright playwriter poet poet laureate poetress rhapsode rhapsodist satirist scenario writer scenarioist scenarist scop scorer scriptwriter skald song writer songsmith sonneteer symbolist symphonist tone poet tragedian troubadour trouveur trovatore tunesmith vers libriste vers-librist