EXPO '70 was formed in Los Angeles by Justin Wright as a side-project, while he was playing guitar in Living Science Foundation (Second Nature Recordings; GSL50 Compilation). Initially, the group also included Wright's friend, PK . The pair improvised creating sounds bouncing effect-ridden instruments creating a wide range of textures and moods. EXPO '70's first recording and inception was during PK's project SXBRS recording session, resulting in one of many split releases on PKs' label.

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