also: ふるうた
noun
old poem; old song
Typically refers to classical Japanese poetry, especially waka (和歌), but can also denote old songs in general.
See also: 和歌
この古歌は万葉集に収められている。
This old poem is included in the Man'yōshū.
祖母はよく古歌を口ずさんでいた。
My grandmother often hummed old songs.
和歌 specifically refers to classical Japanese poetry in the waka form, while 古歌 is a broader term for any old poem or song, often including waka.
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.