Introduction to MIDI and Computer Music: Reason: Changing Tempo and Meter
To set the tempo and time signature for an entire sequence, you just edit the numbers in the Transport Panel at the bottom of the screen. But what if you want the tempo or meter to change in the middle of a sequence?
CAUTION: These instructions apply to Reason 7. In Reason 8, there are some cosmetic differences.
You cannot record time signature changes — only draw them. Here’s how to do that.
This places a time signature automation lane in the Transport track.
Notice how the ruler reflects the time signature change, which lasts only for the duration of the clip.
Time signature clips must begin and end on measure boundaries. Otherwise, you can resize, copy, move, and delete them just as you would for note clips.
Note that changing the time signature for a sequence has no effect on the way the music sounds. It merely adjusts the way the notes align with beats and measures displayed in the Sequencer.
You can record tempo changes, or you can draw them into a graph.
There are two ways to record tempo changes. Before doing either, you first must select the Transport track by clicking on it in the Track List.
Set the Position Pointer (or rewind) to an appropriate spot, press Record, then do either of these:
Recording tempo changes seems like a good idea, but it is often more precise to enter tempo changes graphically.
This places a tempo automation lane in the Transport track.
That way, you will be able to see a scale at the left of the tempo graph, as well as a way to set the default tempo. Review the Editing Automation Data section of Automating Instrument and Effect Parameters. The tempo graph works the same way.
If you decide later not to have a tempo change after all, you can still leave the tempo data in your sequence, in case you change your mind again later. Just click the M (mute) button in the tempo lane so that it turns red. Then the sequence will use whatever constant tempo you type into the tempo field in the Transport Panel.