| MusicBrainz::Artist | Represents an artist |
| MusicBrainz::ArtistAlias | Represents an artist alias |
| MusicBrainz::ArtistFilter | A filter for the artist collection |
| MusicBrainz::ArtistIncludes | A specification on how much data to return with a track |
| MusicBrainz::ArtistResult | Represents an artist result |
| MusicBrainz::AuthenticationError | Authentication failed |
| MusicBrainz::ConnectionError | Getting a server connection failed |
| MusicBrainz::DefaultFactory | A factory to instantiate classes from the domain model |
| MusicBrainz::Disc | Represents an Audio CD |
| MusicBrainz::DiscError | The Audio CD could not be read |
| MusicBrainz::Entity | A first-level MusicBrainz class |
| MusicBrainz::Exception | |
| MusicBrainz::IFactory | A factory to instantiate classes from the domain model |
| MusicBrainz::IFilter | A filter for collections |
| MusicBrainz::IIncludes | An interface implemented by include tag generators |
| MusicBrainz::IWebService | An interface all concrete web service classes have to implement |
| MusicBrainz::Label | Represents a record label |
| MusicBrainz::LabelAlias | Represents a label alias |
| MusicBrainz::MbXmlParser | A parser for the Music Metadata XML format |
| MusicBrainz::Metadata | Represents a parsed Music Metadata XML document |
| MusicBrainz::ParseError | Exception to be thrown if a parse error occurs |
| MusicBrainz::Query | A simple interface to the MusicBrainz web service |
| MusicBrainz::Relation | Represents a relation between two Entities |
| MusicBrainz::Release | Represents a Release |
| MusicBrainz::ReleaseEvent | A release event, indicating where and when a release took place |
| MusicBrainz::ReleaseFilter | A filter for the release collection |
| MusicBrainz::ReleaseIncludes | A specification on how much data to return with a release |
| MusicBrainz::ReleaseResult | Represents an release result |
| MusicBrainz::RequestError | An invalid request was made |
| MusicBrainz::ResourceNotFoundError | No resource with the given ID exists |
| MusicBrainz::ResponseError | The returned resource was invalid |
| MusicBrainz::Result | Represents generic search result |
| MusicBrainz::Tag | |
| MusicBrainz::TimeOutError | Connection to a server timed out |
| MusicBrainz::Track | Represents a track |
| MusicBrainz::TrackFilter | A filter for the track collection |
| MusicBrainz::TrackIncludes | A specification on how much data to return with a track |
| MusicBrainz::TrackResult | Represents an track result |
| MusicBrainz::User | Represents a MusicBrainz user |
| MusicBrainz::UserFilter | A filter for the user collection |
| MusicBrainz::ValueError | |
| MusicBrainz::WebService | An interface to the MusicBrainz XML web service via HTTP |
| MusicBrainz::WebServiceError | A web service error has occurred |
1.5.6