A program of the Association for Public Art, Museum Without Walls: AUDIO is an innovative and accessible outdoor sculpture audio program for Philadelphia’s preeminent collection of public art.Museum Without Walls: AUDIO offers the unique histories that are not typically expressed on outdoor permanent signage. Unlike audio tours that have a single authoritative guide or narrator, each speaker featured in Museum Without Walls: AUDIO is an “authentic voice” – someone who is connected to the sculpture by knowledge, experience, or affiliation. Over 150 unique voices are featured, including artists, educators, scientists, writers, curators, civic leaders, and historians.