No music for me while observing, just the sounds of the mountains and the creek behind the house as well as the rabbits and kangaroos chewing on our plants.
( I too set up in the driveway but around here you can still leave things like cars and houses unlocked, often the keys still in the ignition)
I do have a little security system in place though >>
http://i13.photobucket.com/albums/a2...W/Lara3yrs.jpg