一曲|いっきょくikkyoku

1. nountune (melody, piece of music)
   彼女かのじょはピアノで一いち曲きょく弾ひいた。↗

   She played a tune on the piano.

• Synonym楽曲がっきょくWrittenA musical composition with a written, formal feel, as in 「楽曲を提供する」. Unlike 「一曲」, it carries no sense of the number one.
• Synonym曲きょくNeutralThe everyday word for a tune or piece, also a counter as in 「三曲」. Common in speech, and unlike 「一曲」 it does not itself include the idea of one.
• Related一節ひとふしNeutralStresses a passage or fragment, such as a few bars of a melody or a section of text, whereas 「一曲」 is one whole piece from start to finish.

Use 「一曲」 for one song or piece, as in 「一曲歌う」 or 「もう一曲」. For a passage or fragment of melody say 「一節」, for formal talk of compositions 「楽曲」, and as the general everyday word 「曲」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. ひとつの歌うたや音楽おんがくの作品さくひん。また、その旋律せんりつ。