♪ Unsuk Chin, "Allegro ma non troppo for solo percussion and tape"

How do you write a score for a solo piece for percussionist? And how do you practice for performance? Anyway, this piece is astounding. Here are two renditions of the piece that show the similiarities and differences:

Victor Hanna https://www.youtube.com/watch?v=f0GJiLo_xoo
Ying-Hsueh Chen https://www.youtube.com/watch?v=K1ozF3AvKB0

!listening