John of Damscus, one of the most important theologians of Eastern Orthodox Christianity, writes the following about the relationship between the three Persons of the Trinity: 

…[they] dwell and are established firmly in one another. For they are inseparable and cannot part from one another, but keep to their separate courses within one another, without coalescing or mingling, but cleaving to each other. For the Son is in the Father and the Spirit: and the Spirit in the Father and the Son: and the Father in the Son and the Spirit, but there is no coalescence or commingling or confusion. And there is one and the same motion: for there is one impulse and one motion of the three subsistences, which is not to be observed in any created nature. 

The Greek word “perichoresis” has come to refer not only to this multi-dimensional, incomprehensible unity, but to a particular metaphor describing this relationship: that of a “divine dance” between/among/within the Trinity. 

Perichoresis presents my impression of what that “divine dance” might “sound” like: an ecstatic whirling-about in which all three members become lost in the joy of their very Being(s).  At other points in the piece, the intertwining of the Trinity is symbolized by slow-moving contrapuntal lines, in which each melody, though independent, also contributes to an overall unified whole. 
 
 

Perichoresis was composed at the request of the Triton Brass Quintet, and was premiered by them at the Boston University Tanglewood Institute in 2005.

2008: Triton Brass Quintet, Composers in Red Sneakers Concert, Gasson Hall, Boston College, Mass.

2005: Triton Brass Quintet, Boston University Tanglewood Institute, Lenox, Mass. 

2005: Triton Brass Quintet, Atlantic Brass Quintet International Brass Quintet Seminar, Boston College, Mass.

2005: Triton Brass Quintet, Artist-in-Residence Recital, Boston College, Mass.