Reviving dead people takes a while and I usually end up just sitting there humming to myself waiting for the person to get back up. The Quaggan that hums some of the Guild Wars 2 music made me think that it would be cool if your character hummed a bit of it too while reviving dead players.
Just make sure it stops humming when you are finished/stopped reviving. Don’t want it to turn into the character screams that go on forever when you jump off a ledge into the water.