It’s almost showtime. Mateo gives us the third installment in his video diary series before his big show tonight at The Roxy in West Hollywood. The R&B singer, who is signed to Kerry “Krucial” Brothers’ label Krucial Noise, teases with some of the material he will be showcasing including his single “Say Its So” featuring Alicia Keys. Dirty Money’s Dawn Richard and Stacy Barthe will also hit the stage. Get ready L.A.