Lament/Witches’ Sabbath, composer Mathew Rosenblum’s new album on New Focus Recordings, features David Krakauer, the Boston Modern Orchestra Project, FLUX Quartet, Mantra Percussion, the Pittsburgh New Music Ensemble, Lindsay Kesselman and Lisa Pegher performing four intense and emotionally riveting works that explore the themes of migration, loss, memory, and psychological and cultural transformation. Using a variety of tuning systems, Eastern European lament field recordings, ambient sounds, and pre-recorded voices these works create a compellingly fresh landscape. With diverse musical elements derived from classical, jazz, rock, and world music traditions, Mathew Rosenblum’s compositions offer “an ear-buzzing flood of sound, rich in unusual overtones” (The Boston Globe). A wide array of groups have commissioned, performed, and recorded his music such as the Boston Modern Orchestra Project and the American Composer’s Orchestra. Using a variety of tuning systems, his work does not live within traditional bou