She Moved Through the Fair - Celtic tune

The recording I have is of unaccompanied flute and it's a short, simple song. I don't know much about Celtic music or how to describe it, but I'll try... The piece sounds like a repeated phrase and not much more than that. It begins in the lower octave and stays there for the first half of the song, then moves into the higher octave for the second half. The melody is very free-flowing and peaceful-sounding and because of the title's influence, I picture a girl in a long skirt walking through the street and casually browsing the stalls of the marketplace around her.