“Hey there!” David Pollack hollers into the microphone in the direction of a passing cyclist, halfway through his acoustic set. “Nice day for a ride!” he shouts before slipping back into an Elvis Costello cover.

“Hey there!” David Pollack hollers into the microphone in the direction of a passing cyclist, halfway through his acoustic set. “Nice day for a ride!” he shouts before slipping back into an Elvis Costello cover.