One of the best revelations of Brazilian pop music in recent years, The Garotin began their show at the Palco Sunset, at the end of the afternoon of Friday, after a brief shower scraped a rainbow behind space while the sun was falling in Rock City. Instead of a pot of gold, they were behind the stage, Cupertino, Anchietx and Léo Guima, sharps next to a band that brought all the textures that define the concept of the trio: charming pop dancing w…