In Ceará, Brazil, Narcelio Grud has created one of the more impressive alternate uses for street signs the Urban Guide for Alternate Use has seen, and they’ve seen plenty. Narcelio transforms street signs around the city in to public instruments as part of his Musica Livre project. As the video above shows, the project is exceptional not only for its merits of installing DIY musical instruments throughout the city, but also for the range and inventiveness of the instruments themselves. From stringed instruments to xylophones, the city’s street signs’s new identities bring a smile and tune to anyone who passes by. You can’t ask for much more in a reworked sign than what you see below. The images below and many more can be found here.