Emerson Lake: Rockin' Dudes Or Art-Rock Mofos?

IT'S A SPACIOUS rehearsal studio, though not the world's classiest. I am in London, behind the man running the soundboard, watching the three musicians facing us run through some of the new material. They are preparing for an American tour – their first in this configuration, though they've all been to the States many times previously. The music is almost deafeningly loud, as it should be.