Cubs song tucked away for 6 decades will be performed outside Wrigley Field

The locale referenced in the once unknown tune “Come Out To Wrigley Field.” (Paul Beaty/AP file)

While sorting through his grandfather’s vast record collection in 2015, Rob Sarwark found a mysterious vinyl record labeled “Chicago Cubs Demo.”

The record bore the names of his grandfather, Pasquale “PJ” Panico, and a late family friend, Paul Gallis.