The following instructions show you how to create an expression that produces a smooth pitch bend over the course of one whole note—from the pitch wheel’s at-rest position to its top position and back down again. It’s impossible to predict the precise musical effect this will have on your MIDI keyboard, because the pitch wheels on different MIDI keyboards have different intervallic ranges; on some, you can specify this range (usually up to an octave or so up or down).
While you can create your own pitch bend expression. you may prefer to load the pitch wheel library that’s in your Libraries folder, because this library already contains the expression you’re about to create with the exception that it only lasts a quarter note instead of a whole note. If so, choose File > Load Library. Locate the Pitch Bend Library (in the Libraries folder), and double-click it. Then place it into your score as described below.
- Click the Expression tool
. Click on, above, or below the note to which you want to attach the marking. The Expression Selection dialog box appears. If the pitch bend expression marking already appears in the list (because you’ve loaded the Pitch Bend Library, for example), double-click it and click OK; you return to the document.
- Click Create. The Expression Designer dialog box appears. Type “Pitch bend” (or whatever text you want to appear in the score, if any, at the location of the pitch bend). To change the font, highlight the text, and then from the Text menu, choose Font.
- Click the Playback tab. The playback options appear.
- Choose Type > Pitchwheel. Choose Execute Shape, then the Executable Shape Create button. You’re now in the Shape Designer.
- Choose Shape Designer > Rulers and Grid and select Eighth Notes. Type 4 in the Grid Marks Every ___ 8th notes text box. Click OK. Choose Shape Designer > Show > Grid (if you wish).
- Choose View > 25%. When you use the Shape Designer to create a pitch bend, the range of pitch wheel values is from -8192 (pitch wheel at the bottom of its range) to 8191 (pitch wheel at the top of its range). The pitch wheel’s value when it’s “at rest” is 0.
Because these values are so large, you’ve just reduced the Shape Designer display so that you’ll be able to see the entire shape in the window at once. (You should also click the Hand Grabber tool and drag so that the small white circle (origin) is closer to the lower-left of the drawing area.) You’re about to design an Executable Shape—a shape whose contour governs the effects of the pitch bend. For more on Executable Shapes, see To define an expression for playback.
- Click the Multiline Tool
. To use the Multiline tool, you drag to create the first line segment, click at each subsequent corner, and then double-click to complete the shape. To make your shape match the dimensions of the one pictured here, observe the H: and V: numbers as you move the cursor, and place your mouse clicks according to the table below. (Of course, you can always drag individual points into position, using the Selection tool, after you’ve drawn the shape.)
- Draw the shape as shown:
You should have a tall, upside-down V. This Shape Expression first bends the pitch wheel up, and then back down to its original position.
- Click OK to exit the Shape Designer.
- In the Level Scale boxes, enter 128:1. Remember that a pitch wheel’s actual “maximum” value is 8191. By multiplying the height of the shape you drew by 128, you’re telling Finale to make the pitch bend 128 times more pronounced; if you didn’t, you probably wouldn’t even be able to perceive the pitch bend.
The shape you drew was 32 eighth notes (4 measures) long. The reason for this is to create a smoother sounding pitch bend.
- Change the Time Scale. Enter a 1:4 Time Scale ratio to make the pitch bend last only 1/4 as long (a whole note); enter 2:1 to make it last twice as long, and so on. The shape in the pitch bend library has a Time Scale ratio of 1:16 to last only a quarter note.
- Click OK and Assign to return to the score. Listen to the pitch bend in playback and see how it works. If you want it to be less pronounced, decrease the Level Scale (or change the maximum pitch bend interval on your MIDI keyboard). If it lasts too long, decrease the Time Scale.
If you entered text for the pitch bend expression, drag this handle to move the expression; click it and press DELETE to remove it.
