Montreal-based composer Christopher LaRosa displays his techniques for recording with crystal pyramids. He wrote a piece of atmospheric music for my book-in-progress High Ashes, called, at my request, “The Music Heard Above.” The digitally engraved first staff will take the place of the poem on the page. I describe it in this way in the front matter of the manuscript: “The musical staff inserted as the poem ‘The Music Heard Above’ is the transcription of Christopher LaRosa’s ‘The Music Heard Above for Seven Singing Pyramids,’ music commissioned for the book. At the author’s request, the initial seven tones of the piece mimic the first measure of Henry Purcell’s ‘Ground in C Minor,’ Z. D221, for harpsichord. Singing pyramids are quartz crystal chimes in the geometric form of square pyramids, used to induce trance states in therapeutic and shamanic practice. The instruments recorded for LaRosa’s piece are 4, 5, 6, 7, 8, 9, and 10 inches. The physical rotation of the instruments creates a range of delta, theta, alpha, and beta binaural beatings, .4 hz to 14 hz, corresponding with neural oscillations of the human brain.”