空そらで歌うたう

expression, godan verb (-u)

sing from memory

Used when someone sings a song without looking at the lyrics, relying solely on memory.

• 彼かれはその曲きょくを空そらで歌うたえる。

  He can sing that song from memory.

• 歌か詞しを見みないで、空そらで歌うたってみてください。

  Please try singing it from memory without looking at the lyrics.