Septimus plays : Tasmanian Sonata 6
by Ron Nagorcka (2016)
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Library shelf no. 786.5/NAG 6 [Available for loan]
I have been experimenting for some time with ways to write music which explores harmonies based on the 7th harmonic (using the so-called septimal intervals.) There are no septimal intervals on a normal (equally tempered) keyboard so this piece (as well as Tasmanian Sonatas 5 & 7) requires the retuning of 4 octaves of a harpsichord or one 8 ft. rank of organ pipes. This peculiar tuning means that the composer's options are limited to certain harmonies, but these are fascinating enough to have inspired several compositions. As this piece does not use the organ pedal board, it could also be played on a correctly tuned electronic keyboard.
Instrumentation: Pipe organ (one 8 ft rank) or harpsichord tuned in just intonation as directed.
Duration: 3 min.
Dedication note: dedicated to harpsichord builder Mars Macmillan
The composer notes the following styles, genres, influences, etc associated with this work:
Microtonal music (especially just intonation) has been written by many composers over the last 100 years. Tasmanian Sonatas 5 and 7 use the same tuning.
- In the form/style of: Sonatas
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