BY Don Howell “I grew up listening to classic rock with my dad in the car,” says Marti Gould Cummings, gearing up to perform a celebration of ‘90s rock at 54 Below on April 1. “The first concert I ever went to was Eric Clapton when I was 8. That same year, my dad took me to see Fleetwood Mac.” Along with his band, Marti and the Cummers, everyone’s favorite drodge queen will sing songs...