The fingerboard of John Schneider's guitar used in the recording of Jahla in the Form of a Ductia |
Lou Harrison's Jahla in the Form of a Ductia (or, to use its full title Jahla in the Form of a Ductia to Pleasure Leopold Stokowski on his Ninetieth Birthday) is a work originally for harp and percussion. This tuning is a standard diatonic just scale in D. (For the definition of cents and explanation of the following lattice diagram, see the note for the tuning of the Serenade and for more mathematical details, go here.).
| Pitch | D | |
E | |
F# | |
G | |
A | |
B | |
C# |
| Ratio from 1/1 | 1/1 | |
9/8 | |
5/4 | |
4/3 | |
3/2 | |
5/3 | |
15/8 |
| Cents from 1/1 | 0 | |
203.9 | |
386.3 | |
498 | |
702 | |
884.4 | |
1088.3 |
| Frequency | 293.3 | |
330 | |
366.7 | |
391.1 | |
440 | |
488.9 | |
550 |
| Ratio between pitches | | 9/8 |
| 10/9 |
| 16/15 |
| 9/8 |
| 10/9 |
| 9/8 |
|
| Cents between pitches | | 203.9 |
| 182.4 |
| 111.7 |
| 203.9 |
| 182.4 |
| 203.9 |
|
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