This is a concept of a sculpture of a profile of Thelonious Monk.
The top arch is the top of his hat. The top of the lead pipe is his left eye. The hole from the missing fourth wire is his nostril. The left point of the red square is his nose. The cuts on that square are his beard. The grooves on the base of the lead pipe is the end of his tie. The figure is resting on an ivory slab.
Th title represents a jazz trio, the figure having three main levels.