September 21 & 22 Featuring Two Stages of Free Entertainment, Merchant Marketplace, Delicious Food and More WHAT:Polk Street Blues Festival Steven Restivo Event Services, LLC and The Polk District Merchants Association are pleased to announce the 2013 Polk Street Blues Festival, a free, two-day celebration featuring outstanding live blues music along San Francisco's Polk Street, between Pacific and Union streets, Saturday and Sunday, September 21st & 22nd, 10 am to 6 pm.