is a man-portable, backpack-mounted version of the PVC Pipe Instruments
played by the Blue Man Group
in their show Tubes
. At present, I believe the tubulums have only been used in the Las Vegas
show, due to the different space constraints of their venue
at the Luxor
hotel; they have also been played on the June 29th 2000 Tonight Show
with Jay Leno, where the Blue Man Group was the musical guest act.
The tubulums consist of varying lengths of PVC piping, mounted and arranged such that striking their ends produces a range of hollow tones. The three Blue Men play them, usually to the accompaniment of their band, producing a unique percussion and melody.