Babbitt's None but the Lonely Flute

The entire time I listened to this I was thinking that it's beautiful and haunting, and I could hear fragments of a theme, but I couldn't figure out what in the world it had to do with electroacoustic music. It's only one flute line. I could hear that the line is very disjunct, but unless I know very little about flutes (which is entirely possible) I think that this didn't require piecing together of tracks or some other electronic fiddling, and I didn't hear any effects. I was really confused. I knew Milton Babbit was a famous composer who used the 12 tone series, and I knew he did some experimenting with electronic music, but I still failed to see the correlation between that and this particular piece.