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

御雑煮[ozouni] New Year dish
ファッション雑誌[fasshonzasshi] fashion magazine
悪口雑言[akkouzougon] all kinds of malicious gossip
雑える[majieru] to mix
雑ぜる[mazeru] to mix

混雑[konzatsu] confusion
錯雑[sakuzatsu] complication
雑音[zatsuon] noise (jarring, grating)
雑貨[zakka] miscellaneous goods