“民歌”用英语怎么说？

她开始用钢琴演奏那首民歌.She struck up a folk melody on the piano.应观众再唱一曲的要求, 他清唱了一首民歌.For an encore, he sang an unaccompanied folk song.她在哼一首我以前从未听过的民歌.She is humming a folk song that I never heard before....

“民歌”的拼音为：mín gē...