The Latvian composer Peteris Vasks, who is known for his atmospheric pieces for string orchestra, “Cantabile”, “Musica dolorosa” and “Voices”, is concentrating increasingly on chamber music: his latest works are the “Partita” for cello and piano, the “Fifth String Quartet” and a piano quartet. Vasks has brought elements of ancient and folk traditions in Latvian music into his compositions. While most of his works have programmatic titles relating to natural processes, Vasks is not concerned with...