this song is 'In Hallstatt' of Shin Ah Ram Trio. the woman in the video is the composer.
she made the song from the experience she traveled to Hallstatt. she wanted to express the peaceful atmosphere of Hallstatt.
I've never been there but the song sounds so peaceful, actually the song is my favorite.
Jazz isn't such famous field in Korea... but the music style is sooo beautiful. I just want to let people listen it.