also: ふるうた
My grandmother often hummed old songs.
Standard kanji form for the reading こか, referring to old poems, especially waka.
Alternate reading ふるうた is less common and may appear in older or literary contexts.
Compound of 古 (old) and 歌 (song/poem). The reading こか is the standard Sino-Japanese on'yomi, while ふるうた is a native Japanese kun'yomi reading that is less common.