> ## Documentation Index
> Fetch the complete documentation index at: https://chart-spec.enchor.us/llms.txt
> Use this file to discover all available pages before exploring further.

# authoredTracks()

```ts theme={null}
function authoredTracks(chart): readonly AuthoredTrack[];
```

Every instrument track of a chart file, as the file writes it, in file order. Empty for a `.mid` file that can't be read.

## Parameters

| Parameter | Type |
| - | - |
| `chart` | [`ChartDocument`](https://chart-spec.enchor.us/scan-chart/api/index/type-aliases/ChartDocument) |

## Returns

readonly [`AuthoredTrack`](https://chart-spec.enchor.us/scan-chart/api/index/interfaces/AuthoredTrack)\[]


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