Topsy Organ Scales

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These are the Topsy MIDI scales which I support, along with some notes to help you choose which scale to use, and how to get the best out of it.

Simple Organ Scales with Notes only

 

31-note scale G to C
(43 - 84)

31-note scale D to G
(38 - 79)

         

26-note scale C to A#
(48 - 82)

26-note scale G to F
(43 - 77)

MIDI No. Note Section MIDI No. Note Section MIDI No. Note Section MIDI No. Note Section
84 c Melody 79 g Melody
83 b Melody 78 f# Melody
82 a# Melody 77 f Melody 82 a# Melody 77 f Melody
81 a Melody 76 e Melody 81 a Melody 76 e Melody
79 g Melody 74 d Melody 79 g Melody 74 d Melody
78 f# Melody 73 c# Melody 78 f# Melody 73 c# Melody
77 f Melody 72 c Melody 77 f Melody 72 c Melody
76 e Melody 71 b Melody 76 e Melody 71 b Melody
75 d# Melody 70 a# Melody 75 d# Melody 70 a# Melody
74 d Melody 69 a Melody 74 d Melody 69 a Melody
73 c# Melody 68 g# Melody 73 c# Melody 68 g# Melody
72 c Melody 67 g Melody 72 c Melody 67 g Melody
71 b Melody 66 f# Melody 71 b Melody 66 f# Melody
70 a# Melody 65 f Melody 70 a# Melody 65 f Melody
69 a Melody 64 e Melody 69 a Melody 64 e Melody
67 g Melody 62 d Melody 67 g Melody 62 d Melody
66 f# Accomp 61 c# Accomp 66 f# Accomp 61 c# Accomp
65 f Accomp 60 c Accomp 65 f Accomp 60 c Accomp
64 e Accomp 59 b Accomp 64 e Accomp 59 b Accomp
62 d Accomp 57 a Accomp 62 d Accomp 57 a Accomp
61 c# Accomp 56 g# Accomp
60 c Accomp 55 g Accomp 60 c Accomp 55 g Accomp
59 b Accomp 54 f# Accomp 59 b Accomp 54 f# Accomp
58 a# Accomp 53 f Accomp 58 a# Accomp 53 f Accomp
57 a Accomp 52 e Accomp 57 a Accomp 52 e Accomp
55 g Accomp 50 d Accomp 55 G Bass 50 D Bass
53 F Bass 48 C Bass 53 F Bass 48 C Bass
50 D Bass 45 A Bass 50 D Bass 45 A Bass
48 C Bass 43 G Bass 48 C Bass 43 G Bass
45 A Bass 40 E Bass
43 G Bass 38 D Bass
To write music for this organ
use this scale with my Music Editor
      To write music for this organ
use this scale with my Music Editor

Options
The two 31-note scales are musically identical. They just start on different notes.

Although musically identical, they will not play the same MIDI files, as the notes are connected to different MIDI numbers (43-84 or 38-79).  You will need to tell me which numbers you have used.
Same for the two 26-note scales.
You can start each scale on any note, as long as the intervals between notes are preserved, and the notes are connected to the above MIDI numbers.
The 31-note scales are compatible with the Raffin 31-note organ.
The 26-note scales are compatible with the John Smith Universal organ.
You can see from the tables above that the 31-note scale is an extension of the 26-note scale, with 1 extra Bass, 2 extra accompaniment, and 2 extra Melody notes.


Organ Scales with Optional Percussion and Registers

 These MIDI scales are the ones that Alan Pell has been using for over 20 years.  They are the nearest there is to an industry standard.

  

25-31 key scale

MIDI No. Note Alternative Section
85 Side Drum Percussion
82 Side Drum Percussion
76 e a Melody
74 d g Melody
73 c# f# Melody
72 c f Melody
71 b e Melody
69 a d Melody
68 g# c# Melody
67 g c Melody
66 f# b Melody
65 f a# Melody
64 e a Melody
62 d g Melody
61 c# f# Accomp
60 c f Accomp
59 b e Accomp
57 a d Accomp
55 g c Accomp
54 f# b Accomp
52 e a Accomp
50 d g Accomp.
48 C F Bass
46 Bourdons / Flutes
or Soft register
Register
45 A D Bass
44 Violins
or Loud register
Register
43 G C Bass
40 E A Bass
39 Glockenspiel Register
38 D G Bass
37 Bass Drum and
Cymbal
Percussion

To write music for this organ use
this scale with my Music Editor

Options
This scale is based on the Pell Harmonist scale. The given notes are just examples.  You can start the scale on any note, as long as the intervals between notes are preserved, and the notes are connected to the same MIDI numbers.
The registers are all Melody registers (12 notes).  The Bass and Accompaniment play on fixed pipework.

All the Register and Percussion keys are optional.  A basic 25-note organ would contain the 25 notes only.  A 26-note organ might consist of 25 notes plus the Bass Drum, etc. (Although, if you do not intend to add registers and percussion, the scales at the top of the page would be a better option.).
Any combination of Percussion and Register keys can be added, up to the full compliment of 30 keys.  If adding a Side Drum, both sticks must be provided (one on 82 and one on 85).
Registers are operated by a short pulse, and when a register is operated, it will cancel the other 2 registers, unless they are also selected at the same time.  Because of this, any unused register keys must be disconnected entirely, otherwise the selection of an unused register will cancel all the registers!
In my music, the Bourdons and Violins are often selected together, to produce a third extra-loud tone.  If you do not want this, you must provide some circuitry to select the Violins only (rather than the Bourdons only). ie. key 46=Bourdons; key 44=Violins; keys 44+46=Violins.
You could add some variety to the percussion by arranging for the Cymbal to play only when the Violins are selected.


42-49 key scale

MIDI No. Note Alternative Section
85 Side Drum Percussion
84 c f Melody
83 b e Melody
82 Side Drum Percussion
81 a d Melody
80 g# c# Melody
79 g c Melody
78 f# b Melody
77 f a# Melody
76 e a Melody
75 d# g# Melody
74 d g Melody
73 c# f# Melody
72 c f Melody
71 b e Melody
70 a# d# Melody
69 a d Melody
68 g# c# Melody
67 g c Melody
66 f# b Melody
65 f a# Melody
64 e a Melody
63 d# g# Melody
62 d g Melody
61 c# f# Accomp
60 c f Accomp
59 b e Accomp
58 a# d# Accomp
57 a d Accomp
56 g# c# Accomp
55 g c Accomp
54 f# b Accomp
53 f a# Accomp
52 e a Accomp
50 d g Accomp
49 Flutes
or Soft register
Register
48 c f Accomp
47 B E Bass
46 Bourdons Celeste Register
45 A D Bass
44 Violins
or Loud register
Register
43 G C Bass
42 F# B Bass
41 F A# Bass
40 E A Bass
39 Glockenspiel Register
38 D G Bass
37 Bass Drum and
Cymbal
Percussion
36 C F Bass

To write music for this organ use
this scale with my Music Editor

Options
This scale is based on the Pell Harmonist scale. Note that this scale is an extension of the 25-31 key scale above, with identical numbering. So this scale will also play that music.
The given notes are just examples.  You can start the scale on any note, as long as the intervals between notes are preserved, and the notes are connected to the same MIDI numbers.
The registers are all Melody registers (22 notes).  The Bass and Accompaniment play on fixed pipework.
All the Register and Percussion keys are optional.  A basic 42-note organ would contain the 42 notes only.
 A 43-note organ might consist of 42 notes plus the Bass Drum, etc.
Any combination of Percussion and Register keys can be added, up to the full compliment of 49 keys.  If adding a Side Drum, both sticks must be provided (one on 82 and one on 85).
Registers are operated by a short pulse, and when a register is operated, it will cancel the other 3 registers, unless they are also selected at the same time.  Because of this, any unused register keys must be disconnected entirely, otherwise the selection of an unused register will cancel all the registers!
In my music, any combination of registers can be selected together (except that the Glockenspiel is never selected on its own).  If you want to prohibit certain register combinations, you must provide some circuitry to achieve this.
To save having to provide two ranks of pipes for the Bourdon Celeste register, the Bourdon Celeste register is often a single rank of Bourdon pipes tuned Celeste with the Flute register.  If you do it like this, you will need to provide some circuitry to select the Bourdons plus the Flutes whenever the Bourdons are selected, so that they play together. ie. key 49=Flutes on their own; key 46=Bourdons + Flutes.  The Celeste rank must never be allowed to play on its own because it will sound out of tune.
You could add some variety to the percussion by arranging for the Cymbal to play only when the Violins are selected.
 

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