AVExtendedTempoEvent An object that represents a tempo change to a specific beats-per-minute value. Declarationclass AVExtendedTempoEvent TopicsCreating a tempo eventinit(tempo:)Configuring a tempo eventtempo RelationshipsInherits FromAVMusicEventConforms ToCVarArgCustomDebugStringConvertibleCustomStringConvertibleEquatableHashableNSObjectProtocol See AlsoHandling music eventsAVMusicEventAVMusicUserEventAVParameterEventAVAUPresetEventAVExtendedNoteOnEvent