Latin superstar Alejandro Sanz is planning to duet with Antonio Banderas at the actor's annual charity gala in their native Spain. The Grammy-winning singer is set to be feted with the Humanitarian Award at the 2013 Starlite Gala in Marbella and he's eager to hit the stage with the ceremony's host, Banderas, for a special performance. In a taped video message which aired during the event announcement on Tuesday (25Jun13), Sanz said, "Antonio, you're not going to escape and you're going to sing a song with me." And it appears the Puss in Boots star is game for the challenge - he replied, "You guys are crazy to make me sing! But for the gala I'll do whatever. And for a million euros I'll strip naked." The 2013 Starlite Gala will take place on 10 August (13) and will benefit a series of charitable foundations backed by Banderas.