Now that was one short, sweet work. Ligeti is great, loved the rhythmic, steady opening, then the pyrotechnics building around 1:54, the abrupt but appropriate denouement. Your phrasing and sense of rhythm did great justice to this piece. I'm gonna order it and learn it! Inspiring.
Any thoughts on the title, "Empty String"? Meditations on the string theory? Alternate universes?
Whatever, I liked it!