---
title: MusicRelationshipProperty
framework: musickit
role: symbol
role_heading: Class
path: musickit/musicrelationshipproperty
---

# MusicRelationshipProperty

An identifier for a music item relationship property from a specific root type to a specific value type for the element of the resulting collection.

## Declaration

```swift
class MusicRelationshipProperty<Root, RelatedMusicItemType> where RelatedMusicItemType : MusicItem, RelatedMusicItemType : Decodable
```

## Relationships

### Inherits From

- [PartialMusicAsyncProperty](musickit/partialmusicasyncproperty.md)

### Conforms To

- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Utility

- [MusicItem](musickit/musicitem.md)
- [MusicItemID](musickit/musicitemid.md)
- [MusicItemCollection](musickit/musicitemcollection.md)
- [MusicPropertyContainer](musickit/musicpropertycontainer.md)
- [MusicExtendedAttributeProperty](musickit/musicextendedattributeproperty.md)
- [MusicAttributeProperty](musickit/musicattributeproperty.md)
- [PartialMusicAsyncProperty](musickit/partialmusicasyncproperty.md)
- [PartialMusicProperty](musickit/partialmusicproperty.md)
- [AnyMusicProperty](musickit/anymusicproperty.md)