Sean Rafferty considers the work of Spanish composer Francisco Guerrero, one of the great composers of church music, who died 400 years ago today. Music includes at 5.00 the Venusberg music from Wagner's opera Tannhauser; at 5.40 Copland's Clarinet Concerto played by Benny Goodman; at 6.40 Britten's suite on English folk songs A time there was.... played by the CBSO under Simon Rattle; and at 7.05 another chance to hear part of Radio 3's Disc of the Week: Boccherinl played by the King's Consort, conductor Robert King