Yes, that's right: the "Super Mario Bros. Theme" has lyrics, which is great news if you like getting lyrics to very catchy songs stuck in your head. As of December 1, the song has been available on Joysound karaoke systems in Japan. If you hope to sing along in English, here's the translation of some of the lyrics, according to Destructoid (you can see the full lyrics to the song on their site):

Today, full of energy, Mario is still running, running

Go save Princess Peach! Go!

Today, full of energy, Mario runs

Today, full of energy, jumping!

Today, full of energy, searching for coins

Today, keep going, Mario!

Sources: h/t Kotaku