OPEN-shut
OPEN/shut (2010 and later revised in 2016) is a solo for multi-keyboard (marimba/vibraphone) and was premiered on March 3, 2010 at the University of South Florida. There is now an optional quartet accompaniment of tuned metals that was later added in 2016. A version for solo marimba is also available upon request.
This video features Theodore Jackson, an alum of the UCF Percussion Studio, performing OPEN/shut: