Since I’m immersed in all things Peer Gynt…
The first is a trick for Mac users.
1. In System Preferences > Speech > Text to Speech, set the System Voice to Cellos.
2. In TextEdit, type the following:
We are nasty little trolls, little trolls, little trolls,
We are nasty little trolls and we are after you!
3. Select the text then choose: Edit > Speech > Start Speaking
Don’t own a Mac? It sounds like Steve Jobs should be paying Grieg royalties…
This next item from a quartet of Sibelius Academy-trained cellists is suitably savage (adjust volume to taste):