鼻はな歌うた

noun

humming; crooning

Refers to singing softly with closed lips, often unconsciously or while doing something else. Commonly used in the phrase 鼻歌を歌う (to hum a tune).

• 彼かれはシャワーを浴あびながら鼻はな歌うたを歌うたっていた。

  He was humming a tune while taking a shower.

• 機き嫌げんがいいと、つい鼻はな歌うたが出でる。

  When I'm in a good mood, I end up humming without thinking.