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Published on Mar 22, 2012
Sesquialtera by Tom Scott was written for the historic 1829 Renn & Boston organ of St. Philip's Church, Salford. It was premièred by Jonathan Scott on this instrument on 19th March 2012 as part of the Salford University Lunchtime Organ Series.
• A stop on the organ which combines two ranks of pipes which enhance the higher harmonics of the fundamental tone
• The ratio of 3:2 which can be represented in music by the interval of a perfect fifth
The work utilises the unique sound of the Sesquialtera stop from the outset and each section of the piece allows various stop combinations of the instrument to be heard in ever changing textures before building back to the original 'Sesquialtera' sound. During the piece, sound combinations are presented in tonal rhythmic patterns which constantly alter in meter. The resulting interplay of voices allows the listener's ear the opportunity to be drawn to different linear and vertical strands.
A 3:2 ratio can also be expressed as a hemiola (A "three against two" rhythm)
The logo design is by Tom Scott and is inspired by the 3:2 ratio.
LIVE RECORDING OF THE PREMIERE PERFORMANCE PERFORMED BY JONATHAN SCOTT RECORDED AT ST PHILIP'S CHURCH SALFORD 19TH MARCH 2012