@class NSString, NSData, ManagedCatalogWorkoutMetadata; @interface ManagedMusicTrack : NSManagedObject @property (nonatomic, copy) NSString *album; @property (nonatomic, copy) NSString *artist; @property (nonatomic, copy) NSData *artwork; @property (nonatomic, copy) NSString *contentRating; @property (nonatomic) double duration; @property (nonatomic, copy) NSString *identifier; @property (nonatomic) double startTime; @property (nonatomic, copy) NSString *title; @property (nonatomic, retain) ManagedCatalogWorkoutMetadata *catalogWorkoutMetadata; - (id)initWithEntity:(id)a0 insertIntoManagedObjectContext:(id)a1; @end