SongHashMetadata - Chart specification

Properties

Property	Modifier	Type
`album`	`readonly`	`string` \| `null`
`artist`	`readonly`	`string` \| `null`
`charter`	`readonly`	`string` \| `null`
`genre`	`readonly`	`string` \| `null`
`icon`	`readonly`	`string` \| `null`
`name`	`readonly`	`string` \| `null`
`year`	`readonly`	`string` \| `null`