They can hear music

According to Longwood Gardens' brochure for its summer concert series, Robert Randolph, who performed there on June 13, is the leader of Robert Randolph and the Family Band and "was trained at a pedal steel guitarist in the House of God Church. Randolph is known for his lively performances." 

Perhaps too lively. A neighbor of Longwood called police and complained about the noise. Two police officers arrived and asked the sound guy to turn down the volume.