The legends who created The Sound of Philadelphia reunite at the Sigma Sound Studios Historical Marker Dedication

Sigma Sound marker dedication 10-15-15 Click to preview the WMMR broadcast, featuring┬áPiere Robert .... SIGMA FILM WMMR Interview 10.20.15   Sigma Sound marker dedication 10-15-15   Sigma Sound marker dedication 10-15-15   Sigma Sound marker dedication 10-15-15 Sigma Sound marker dedication 10-15-15   Sigma Sound marker dedication 10-15-15 Sigma Sound marker dedication 10-15-15     Sigma Sound marker dedication 10-15-15        

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