LIANNE LA HAVAS: Lianne La Hava Verdict: Powerful summer soul Rating: BUSH: The Kingdom Verdict: Hard-rocking confessionals Rating: RONAN KEATING: Twenty Twenty Verdict: Ballad-heavy hotchpotch Rating: Lianne La Havas sought artistic inspiration from an unlikely source when she started making her third album last summer. Lianne La Havas, pictured performing at the British Summer Time festival in London's Hyde Park …