“Desaparecido” – the missing person – that’s what Manu Chao was often called in recent years – a reference to the catchy tune of the same name, in which he sang “Me llaman el desaparecido” (They call me the missing person) in 1998. But it was also a reference to fans missing his albums, since the last one, “La Radiolina” was released in 2007. With “Viva Tu,” the 63-year-old musician is back again – as is his unmistakable style which has earned him numerous awards. Musically, the French-born Spanish musician’s music is known as mestizo – a mixture of rock, reggae, ska and traditional Latin Amer…