(17d) Birthday images of pop music have changed perhaps (7) _ _ T _ _ _ D. (18a) Ireland's big cert for going away. (7) _ _ A _ _ _ _ . (22a) Eugene crosses dam to get to final stage of bridge. (7) _ _ D _ _ _ E . (23d) Supporters on the spoons perhaps. (8) _ _ _ S _ L _ S. (31a) Two horses moving about in pain. (7) N_ G _ I _ G.