Drumming for possibly the biggest prog-metal band in the world isn't enough for Mike Portnoy. Furiously motivated, he's not just the Dream Theater drummer - he also co-produces their albums, writes lyrics, designs artwork and more. It's not all Theater, either; he plays in prog-rock supergroups such as Liquid Tension and Transatlantic, and if that too weren't enough, he's also in four insanely-happening tribute bands - including Beatles act Yellow Matter Custard. During a massive Dream Theater tour, Portnoy checked in with MusicRadar to discuss the band and his love of playing the music of his heroes. For more Dream Theater and the best music news, reviews and tuition, head to www.musicradar.com.