The music of Allison’s Gate, an improvisational voice and sound project from Brighton, functions as much as an aggregator of sounds as it does a musical composition. Perhaps sometimes there are “instruments,” but more than that there are memories. Memories that cause trauma, memories that cause anguish, and memories that cause bliss. Sink or Swim, the project’s debut LP on Memorials of Distinction, is an album of memories. It exists more like a photo album brought out by your grandmother or a handful of trinkets from a past relative than anything else. But sometimes, among the dusty record scratches or deteriorating delays of the songs, the question arises: to whom do these memories belong?