The excellent narrators below can supply the voice for your speed-drawing message. Click each to hear a short audio sample. If none of these fit your needs, have a look at VoiceBunny.com, but be sure to filter the results to fit your budget.
You’re welcome to provide any music track (typically royalty-free) to use in your video, though I recommend locating a track you like on SmartSound.com (let me know your choice, and I will handle the purchasing). If you’re too short on time to peruse music options, no problem: I can use a suitable track from my own library.