Choosing Bar|Beat Markers or Tempo EventsBecause tempo events are tick-based, and Bar|Beat Markers are sample-based, they cannot be mixed. If a session contains tempo events and you attempt to insert Bar|Beat Markers, existing tempo events are converted to Bar|Beat Markers (and vice versa).Tempo events can also be manually converted to Bar|Beat Markers and vice versa. When converting between Tempo events and Bar|Beat Markers, some amount of sample rounding may occur.1 Press Control (Windows) or Command (Mac) and click the Add Tempo Change button.