Hi Celfyn, you could try the following: Go to "File -> Project Settings" and choose the tab "Project Settings" and set "Timebase for events/envelopes/markers:" to "Time" BTW: If you want to change the tempo gradually, you can do this by making the tempo envelope in the master track visible. (the master track has to be visible as well, of course), select the first node, where the tempo change should begin by right-clicking on it, then, in the appearing menu choose "Set point shape -> Linear". To change the playrate, go to the master track and click on the envelope button. (in the default theme it is marked "trm") and enable "Playrate". Now you can manipulate the envelope as you like. HTH -Data