When using non-measured smooth time, durations are determined exclusively by the durations of the prototypes of sound-objects found in the first sequence (appearing on the top of graphics).

To set this mode type cmd-t and type "0" in the "ticks" field of the "Time base" dialog. The "Metronom" dialog will display "no clock".

You may try to play Mozart pieces in non-measured smooth time if you want to make them sound as if your little sister were deciphering the score. This mode is useful when dealing with sound-objects that have predetermined durations.