The "Environmental Percussion" series finds Akita exploring the rhythmic potential of non-traditional sound sources - objects, spaces, and acoustic phenomena pressed into service as percussion instruments. These experiments anticipate the more overtly beat-driven work of later periods while connecting to musique concrète traditions of treating all sounds as potential musical material.

Akita transforms everyday acoustic phenomena into percussion, finding rhythm where conventional listeners perceive only chaos. The "environmental" aspect suggests sounds derived from surroundings rather than instruments - urban noise, industrial machinery, natural phenomena. Yet the "percussion" designation insists these sounds possess rhythmic qualities, challenging listeners to hear pulse and pattern within apparent randomness.