The Nokia Tune has been on every Nokia phone for more than 10 years. The tune is an adaptation from Francisco Tarraga’s Grand Vals, but it has now been reproduced in different styles and moods. Here’s a cool video of a very talented violinist who’s interrupted by the Nokia Tune; he then out of nowhere improvises the tune and adds his own touch to it. Amazing!
If you want to explore the different types of Nokia Tune ringtones out there (anything from the dub step edition, to the tango version), check out audio draft, and this tutorial to install ringtones in your Nokia Lumia.