The English poet and artist William Blake wrote of the intentionality and originality in art as being demarcated by a "bounding line," meaning that the more "sharp and distinct" the boundaries of the piece are drawn, the more perfect the art. Pianist Greg Reitan took this idea to heart for his new recording, The Bounding Line.

As a composer, Reitan has an appreciation for the work and genius of Aaron Copland. He was honored to have been awarded a residency that enabled him to live and work at Copland's Rock Hill, the composer's home from 1960 until his passing in 1990. The residency provided Reitan an opportunity to refine his work and hone these compositions under Blake's ethos of strong and defined boundaries of style and form. At the end of Reitan's stay, Daro and Koba joined him at Rock Hill for a series of performances featuring works inspired by the residency. Four years later, Reitan reconvened the trio to record the work begun at Rock Hill, along with a handful of thoughtfully chosen but rarely heard covers, in Los Angeles in October 2023.