Wurlitzer APP & Caliola scale
data from collectors Bill Black, Bob Fine, Fritz Gellerman, 
and from the book, "Treasury of Mechanical Music" by Arthur A. Reblitz.

APP	MIDI	note	remarks
roll	note	name

 1  Shut-off (coin trip)
 2  ON  mandolin & hammer rail
 3  OFF mandolin & Hammer rail
 4  ON  sustaining pedal
 5  OFF sustaining pedal
 6  snare drum (reiterating)
 7	33	A	lowest note on APP piano
 8	34	A#	
 9	35	B	
10	36	C	A-roll piano lowest note
11	37	C#	
12	38	D	
13	39	D#	
14	40	E	
15	41	F	
16	42	F#	
17	43	G	
18	44	G#	
19	45	A	
20	46	A#	
21	47	B	
22	48	C	(National calliope lowest note)
23	49	C#	
24	50	D	
25	51	D#	
26	52	E	
27	53	F	F below Middle C - longest pipe on Caliola (pipe #1)
28	54	F#	
29	55	G	
30	56	G#	
31	57	A	
32	58	A#	
33	59	B	
34	60	C	Middle C, MIDI note 60
35	61	C#	
36	62	D	
37	63	D#
38	64	E	(on the center line of the paper)
39	65	F	
40	66	F#	
41	67	G	
42	68	G#	
43	69	A
44	70	A#	
45	71	B	
46	72	C	
47	73	C#	
48	74	D	
49	75	D#	
50	76	E	
51	77	F	
52	78	F#	
53	79	G	
54	80	G#	
55	81	A	Caliola lowest bell
56	82	A#	
57	83	B	
58	84	C	
59	85	C#	
60	86	D	
61	87	D#	
62	88	E	
63	89	F	
64	90	F#	
65	91	G	
66	92	G#	
67	93	A	(A-roll piano highest note)
68	94	A#	
69	95	B	(Tangley 43-key highest note)
70	96	C	Caliola highest note, highest bell
71	97	C#	APP highest note
72  ON  violin
73  OFF violin
74  bass drum
75  (rewind)

Note: 

In 1976 Noble Stidham, of Mechanical Systems, Inc., Lubbock, Texas, gave 
organ historian Fritz Gellerman a photocopy showing two old Wurlitzer scale 
sticks evidently used to arrange music for APP and Caliola music rolls.

The image of the smaller scale stick, marked "Original scale for Caliola", 
shows the pipes connected as in the list above.

The image of the larger scale stick shows complete annotation for APP,
with subordinate marks showing the Caliola pipes connected to APP tracker 
bar holes 26 through 69, i.e., one tone flat.  

Possibly this is because the noteur who used the larger scale stick was 
arranging tunes for an instrument with pipes that were actually tuned one 
tone flatter than the note stamped on the pipe.

JPEG image: APPsticks.jpg (376 kb) Wurlitzer scale sticks

JPEG image file: Wur75chTB.jpg (82 kb) drawing of APP & 165 tracker bars

Many tracker scales and key frame layouts are included in "The Golden Age of Automatic Musical Instruments," copyright 2001 by Arthur A. Reblitz, and in "Treasures of Mechanical Music," copyright 1981 by Arthur A. Reblitz and Q. David Bowers.