The Nokia Tune is probably the most recognizable ringtone in the world. It was also the first musical ringtone for cell phones.

But the Nokia Tune wasn’t an original. It’s a short clip lifted from the classical guitar piece Gran Vals. It was written by Francisco Tárrega in the late 19th century. Tárrega is often considered the father of classical guitar playing.

Listen for it at 15 seconds, and again at 2:56.