The document contains musical notation for an accordion piece. It lists notes and chords in ascending order, including accidentals and octave indicators. It also provides chord names in parentheses for some entries. At the bottom it identifies that lowercase letters indicate notes and uppercase letters indicate chords, with an example chord provided of (LA-RE-SOL).

1. 15
ACORDEON ADG
25
24
23
22
14
13
12
4
3
2
1
11MIb4
FA4
LA3
SI3
REb4
RE4
MI4
FA#4
LAb4
SIb4
LA3
REb4
RE4
MI4
FA#4
SOL4
LA4
SI4
FA5
MIb5
RE4
FA#4
SOL4
LA4
SI4
DO5
RE4 (2C, 13C, 24A)
MI4 (13A, 25C)
FA4 (22A)
SOL4 (3C, 14A)
SI3 (23A)
LA6 (21C)
FA#6 (10A, 20C)
MI6 (9A, 21A, 31C)
REb6 (20A, 30C)
SI5 (7C, 19A, 31A)
FA#5 (6A, 17C, 29A)
REb5 (16A, 27C)
LA3 (12C, 23C)
LAb5 (30A)
MIb5 (1A)
FA#4 (2A, 14C, 25A)
MIb4 (22C)
LAb4 (11C, 26A)
SIb4 (11A)
REb4 (12A, 24C)
SOL6 (9C)
SI6 (10C)
RE6 (8C, 19C)
MI5 (5A, 17A, 28C)
RE5 (5C, 16C, 28A)
DO5 (4A)
SI4 (4C, 15A, 27A)
LA4 (3A, 15C, 26C)
LA5 (7A, 18C, 29C)
DO6 (8A)
SOL5 (6C, 18A)
FA5 (1C)
27
28
29
30
31
26
21
20
19
18
17
16
10
9
8
7
6
5
LA4
LAb4
REb5
SI4
MI5
RE5
LA5
FA#5
REb6
LAb5
MI6
SI5
RE5
REb5
FA#5
MI5
LA5
SOL5
RE6
SI5
FA#6
REb6
LA6
MI6
RE5
MI5
SOL5
FA#5
SI5
LA5
RE6
DO6
SOL6
MI6
SI6
FA#6
Cerrando
Abriendo
SOL
RE
DO
DO
solM
reM
doM
doM
RE
LA
SI
MI
reM
laM
siM
mim
LA
MI
FA#
SI
laM
miM
fa#M
sim
Acorde: Minúsculas
Nota: Mayúsculas
(LA-RE-SOL)