# Welcome to the Highcharts Gantt JS (gantt) Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

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# plotOptions.xrange.sonification.contextTracks.mapping.noteDuration

Note duration determines for how long a note plays, in milliseconds.

It only affects instruments that are able to play continuous sustained notes. Examples of these instruments from the presets include `flute`, `saxophone`, `trumpet`, `sawsynth`, `wobble`, `basic1`, `basic2`, `sine`, `sineGlide`, `triangle`, `square`, `sawtooth`, `noise`, `filteredNoise`, and `wind`.

Can be set to a fixed value, a prop to map to, a function, or a mapping object.