カバー曲[kabaakyoku] remake of another artist's song (a "cover")
サイン曲線[sainkyokusen] sinusoid
愛唱曲[aishoukyoku] favourite song
委曲[ikyoku] details
一曲[ikkyoku] tune (melody, piece of music)

迂曲[ukyoku] meander
円曲[enkyoku] roundabout way (of speaking or working)
円錐曲線[ensuikyokusen] conic curve
円舞曲[enbukyoku] waltz (composition)
演曲[enkyoku] musical program

哀詩[aishi] elegy
英詩[eishi] English poetry
漢詩[kanshi] Chinese poetry
狂詩曲[kyoushikyoku] rhapsody
吟遊詩人[ginyuushijin] troubadour

桂冠詩人[keikanshijin] poet laureate
劇詩[gekishi] dramatic poetry
原詩[genshi] original poem
現代詩[gendaishi] modern poetry

民譚集[mindanshuu] collection of folk stories
後日譚[gojitsudan] sequel
異聞奇譚[ibunkitan] strange stories and curious tales
英雄譚[eiyuutan] epic
譚詩曲[tanshikyoku] ballade

譚歌[tanka] ballad
奇譚[kitan] mysterious story
経験譚[keikentan] story recounting one's personal experience
古譚[kotan] old tale
譚詩[tanshi] ballade