stephband

[
[0,    "chord", "C-7",      2],
[2,    "chord", "A♭∆(♯11)", 2],
[4,    "chord", "D♭∆(♯11)", 2],
[6,    "chord", "G♭∆(♯11)", 2],
[8,    "chord", "B♭7sus",   2],
[10,   "chord", "A♭7(♯11)", 2],
[12,   "chord", "B♭7sus",   2],
[14,   "chord", "C7",       2],
[16,   "chord", "F-7",      2],

stephband

{
    "events": [
        [0, "meter", 4, 1],
        [1,   "A♭2", 0.25, 0.5],
        [3,   "A♭2", 0.25, 1],
        [5,   "A♭2", 0.25, 1],
        [7,   "A♭2", 0.25, 1],
        [0,   "B1", 0.3, 1],
        [1.5, "B1", 0.3, 0.5],
        [3,   "B1", 0.3, 1],