Menstruation Sisters (Lisa & Naomi Tocatly, Oren Ambarchi and Nick Kamiussis) are more of a natural phenomenon than a musical group. Owing more to the sound of ice melting and eggs hatching than strummed guitars and pounded drums, the Sisters keep one ear on the ground and the other towards the atmosphere. Rather than working within the lines of modern rhythm and structure, they revert towards a primal direction, cutting off the fat and oozing forth only the most natural and unfettered sounds. Naturally, such a technique can be unsettling, as it's not something most humans are interested to hear, or have heard since upright-walking became a viable mode of transportation. This is music for those who kill their own food.