Drums For Logic Pro 9

One simple way to get a drum roll is to draw it with the Hyper Editor. Here's a quick lesson in how to do that.
Create a Software Instrument track. On that track, load the Ultrabeat instrument. Close the UB window.
In Arrange, select the pencil tool (press escape to make the tool menu appear). Using the pencil tool, click once in the UB track to create a new, empty region. Press escape-escape to resume using the pointer tool.
Press ⌘5 to open the Hyper Editor window. At the left is the Hyper Editor Inspector. In the Inspector, look where it says MIDI Controls. Just to the right is a downward-pointing triangle. Use that menu to select GM Drum Kit.
In the main part of the Hyper Editor window, find the lane called 'SD 1.' Select it by clicking on the lane header. Hold down ⌃⌥↓ (Zoom Vertical In) to make that lane tall (along with all the lanes).
In the Inspector change Grid from 1/16-Note to 1/96-Note.
In the Inspector, double-click to the right of Length (where it says '1 0') and enter, say, 100 (this means you'll be creating notes that are 100 ticks in length; for reference, note that one beat contains 960 ticks).
Select the pencil tool again. Use the pencil tool to draw an ascending ramp, from left to right, in the SD 1 lane. You'll hear the notes as you draw them.
Make sure the playhead is to the left of your ramp, and press Play. You'll hear your drum roll. You'll notice that the ascending height means ascending velocity.