I was part of the crowd at a Q&A held at Rough Trade Record shop for the band 'Porcupine Tree'. The shop was a block from our rental! They were promoting their reunion album. Seen holding the mic, star Gavin Harrison, fresh off drumming for the final 'King Crimson' tour. Leader and guitarist Steve Wilson stares at me. Keyboardist Richard Barbieri, formerly of 'Japan' on left. My question for them: how had Rush influenced their works?