beginning time of tuplet
==========
----------
time-point right after tuplet
==========
----------
measure
beat (0-18)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
division (0-5)
0
1
2
3
4
5
measure
beat (0-18)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
division (0-5)
0
1
2
3
4
5
tuplet:
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30