         case sixteen = 4
     }
     
-    /// Add a time signature event to start of a tempo track
+    /// Add a time signature event to start of tempo track
     /// NB: will affect MIDI file layout but NOT sequencer playback
     ///
     /// - Parameters:

            AKLog("Unable to set time signature")
        }
    }

    /// Convert seconds into AKDuration
    ///

        var tempoTrack: MusicTrack?
        if let existingSequence = sequence {
            MusicSequenceGetTempoTrack(existingSequence, &tempoTrack)
        }
        
        if let tempoTrack = tempoTrack {
            clearTimeSignatureEvents(tempoTrack)
        }
        
        let ticksPerMetronomeClick: UInt8 = 24
