- From the Window menu, choose 
 Advanced Tools. Click the MIDI 
 Tool  and select the region to be affected. Click to select one measure, 
 SHIFT-click to select additional measures, drag-enclose to select several 
 on-screen measures, click to the left of the staff to select the entire 
 staff, or choose Select All from the Edit menu. and select the region to be affected. Click to select one measure, 
 SHIFT-click to select additional measures, drag-enclose to select several 
 on-screen measures, click to the left of the staff to select the entire 
 staff, or choose Select All from the Edit menu.
If you want to edit only one staff (and 
 the desired region fits on one screen), double-click the highlighted region 
 to enter the MIDI tool split-window.
        
            -  From the MIDI tool menu, choose Key Velocities
- From the MIDI tool menu , choose Alter Feel. 
 The Alter Feel dialog box appears.
- Enter the desired amount of key velocity alteration 
 (a positive or negative number) in the Backbeats By box. The range 
 of MIDI key velocity is 0 to 127, so the number you enter here, when added 
 to the existing velocity values of the notes, will not exceed 127. (If 
 you prefer, you can click the Percent of Original button and type a percentage 
 value into the Backbeats By box.)
- Click OK (or press ENTER).