OMG! The appearance of Havergal Brian's "Gothic" Symphony is like the biblical Leviathan surfacing in Hyde Park. It's epochal. The buses lined up behind the monster aren't full of gawkers but the assembled forces needed to perform the work, not counting trucks loaded with 32 timpani, eight brass choirs, a horde of extra offstage trumpets, and more — much, much more. Choruses throng from all points of the compass. Somewhere at the musicians' union a shop foreman is screaming into the phone, "Don't tell me we've run out of ophicleides and sarrusophones! This is apocalypse!" Oh wait, it was Berlioz who calls for ophicleides and sarrusophones. But some wisp of his spirit hovered over Stoke-on-Trent when the very, very dotty composer, Havergal Brian, was born in 1876.