He batted and threw left-handed, and he was nicknamed "Sweet Music" – a nickname he picked up after a Minnesota sports writer declared that when Viola pitched, there was "Sweet Music" in the Hubert H. Humphrey Metrodome. The nickname was a play on the fact that his last name is also a name of a musical instrument, although pronounced differently. A fan began displaying a banner bearing the phrase in the outfield's upper deck whenever Viola pitched. Twins fans considered the banner to be a good luck charm. The banner is now the property of the Minnesota Historical Society. It was again displayed when Viola was inducted into the Twins Hall of Fame. Frank was honored as a member of the Twins' "All Dome" team in 2009.