Tremolos (multi-note)

{ "mnx": { "version": 1 }, "global": { "measures": [ { "time": { "count": 4, "unit": 4 } }, {} ] }, "parts": [ { "measures": [ { "clefs": [ { "clef": { "sign": "G", "staffPosition": -2 } } ], "sequences": [ { "content": [ { "type": "tremolo", "content": [ { "duration": { "base": "half" }, "notes": [ { "pitch": { "octave": 4, "step": "G" } } ] }, { "duration": { "base": "half" }, "notes": [ { "pitch": { "octave": 5, "step": "E" } } ] } ], "marks": 2, "outer": { "duration": { "base": "quarter" }, "multiple": 2 } }, { "type": "tremolo", "content": [ { "duration": { "base": "half" }, "notes": [ { "pitch": { "octave": 4, "step": "F" } } ] }, { "duration": { "base": "half" }, "notes": [ { "pitch": { "octave": 5, "step": "D" } } ] } ], "marks": 2, "outer": { "duration": { "base": "quarter" }, "multiple": 2 } } ] } ] }, { "sequences": [ { "content": [ { "type": "tremolo", "content": [ { "duration": { "base": "whole" }, "notes": [ { "pitch": { "octave": 4, "step": "E" } } ] }, { "duration": { "base": "whole" }, "notes": [ { "pitch": { "octave": 5, "step": "C" } } ] } ], "marks": 3, "outer": { "duration": { "base": "half" }, "multiple": 2 } } ] } ] } ] } ] }