The second of three volumes devoted to Andrés Isasi’s complete string quartets is again performed by the composer’s foremost champions, the Isasi Quartet, who premiered all the works on this recording. String Quartet No. 4 in D major reveals his vibrant and imaginative use of textures and his affiliations with the music of Dvoràk. Though unfinished, the 1921 String Quartet No. 3 in E minor fuses melodic richness and serenity. Each of the three smaller pieces shows contrast and warmth, not least the beautifully eloquent Prelude in A major.