The Australian Music Prize-winning band whose new album namechecks a Roman emperor – top that Guy Sebastian! – have had more than one crowded hour in their 22 years. As they launch into a month-long tour, I ask their glass-half-empty singer and songwriter what’s pushing them on still? IF YOU’RE HAPPY AND YOU KNOW IT CLAP YOUR BAND Glenn Richards is feeling bright and cheery and bouncing about the studio. Ok, sure, his answer to my introductory ‘how are you?’ was “pretty good,