> ## 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.

# FrozenLegacySongBundleIdentity

```ts theme={null}
type FrozenLegacySongBundleIdentity = 
  | {
  identity: LegacySongIdentity;
  kind: "available";
}
  | {
  kind: "unavailable";
  reason: "historicalDurationUnavailable";
};
```


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