Aftermath of the Oxtail Incident - Part 2

I arrive at the dentist for my root canal.  IPod touch in hand the nurse whisks me away to torture room #3. She applies some topical anesthetic to my gums and cheek area. This isn't to numb the tooth for drilling, nope, this is just to numb the area for the 3 injections I'm going to get to numb the tooth for drilling.  It takes about 5 minuets for the anesthetic to start working so I setup my IPod for surgery.  I've got tons of music, lots of podcasts and the latest Dan Brown audiobook.  So, what goes best with high pitch drilling noise and the smell of burning calcium?