«Blue Canon», 3-in-1 for Baroque Oboe, Recorder, Violin, Bassoon, Continuo, tuned into Eagle 53. 

A 3-in-1 Canon in G for Oboe, Recorder, Violin, and Continuo, tuned into Eagle 53, a tuning devised by John O'Sullivan.
Eagle 53 is normally centred around E; for this piece the same tuning centred around G has been preferred, though.
The tuning has the following cent figures:
G= 0
113.2
203.8
317
384.9
498.1
588.7
701.9
815.1
883
1018.9
1086.8;
essentially, when centred around G, it consists in three pieces of the pyhtagorean chain of fifths: from Fb to Db, from C to A, from G# to E#. It can be used in a more diatonic fashion though, by avoiding the use of triads on F and A. Anyway, this example has been notated by means of the 12-edo customary notation.
#blues #canon #eagle #53 #microtonal #ground #oboe #recorder #violin #baroque #bassoon #continuo

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