Doric Quartet: Alex Redington and Ying Xue violins, Hélène Clément viola, John Myerscough cello. Quiroga Quartet: Aitor Hevia and Cibrán Sierra violins, Josep Puchades viola, Helena Poggio cello. Programme: Haydn - Quartet in D major op. 20 No. 4 Hob. III:34 Brahms - Sextet in G major op. 36 Mendelssohn - Octet in E flat major op. 20