Nana is a musical collaboration app designed to ”sing with the world.” You can record vocals and instruments with the mic on your iPhone, then upload them for sharing. With the function to overdub on uploaded sounds, collaborative work with other users is easier than ever. Through nana, you can partake in harmonization, choral singing and band sessions with anyone on the planet, making global communication with music as the common language a reality. You can make music with anyone in the world even without expensive audio equipment, necessary skills. Picking up your smartphone and sing to Nana would turn your smartphone into a mini recording studio.