Singer and songwriter Pedro Frias will be performing at the Mascarenhas Gregório Theatre in Silves at 9.30pm on September 21. Frias, born in Portimão, has already achieved national and international success, and will perform improvised versions of his own songs, accompanied by many of his friends. Tickets cost €5 and are available at the Silves Castle, the municipal Archaeology Museum and the municipal pool complex, as well as the theatre one hour before the show.