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Percent Alteration Tempo dialog box

How to get there

Choose Window > Advanced Tools. Click the MIDI tool $image\MIDI_Tool.gif$ .
Select a region of measures. (If you’re editing only a single staff, double-click the highlighted area to enter the MIDI tool split-window.) If you’re in the MIDI tool split-window, select the region you want to affect by dragging through the "graph" display area or by selecting the handles of individual notes whose MIDI data you want to edit.
Choose MIDI tool > Tempo.
Choose MIDI tool > Percent Alter.

What it does

This dialog box’s function is to change the tempo of every note in the selected region by a percentage of its current value. Because it changes the data of every selected note by a percentage, the Percent Alter command preserves the relative proportions of the existing values.

For example, you can specify that each note in a selected region should be played back at half the number of beats per minute by entering 50 (%) in the text box.

___ percent of current value. In this text box, enter the percentage by which you want the number of beats per minute to be changed for the selected notes. This value can be any number above zero—you can enter 300%, for example, to make a particular value three times its current value.
OK • Cancel. Click OK to confirm, or Cancel to discard, the MIDI data changes you’ve specified. You return to the MIDI tool split-window (or the score).