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

御馳走様でした[gochisousamadeshita] That was a delicious meal (said after meals)
一っ走り[hitoppashiri] spin (as in 'take a car for a spin')
一走り[hitohashiri] spin
逸走[issou] escape
駅伝競走[ekidenkyousou] long-distance relay race

快走[kaisou] fast sailing (running)
滑走[kassou] glide
滑走路[kassouro] runway
完走[kansou] running the race
競走[kyousou] race

隠遁[inton] retirement (from the world)
出家遁世[shukketonsei] monastic seclusion
遁れる[nogareru] to escape
遁走[tonsou] fleeing
遁世[tonsei] seclusion from the world

遁走曲[tonsoukyoku] fugue
遁辞[tonji] excuse
隠遁者[intonsha] recluse
隠遁術[intonjutsu] Ninja art of escape
遁術[tonjutsu] Ninja art of escape