In Pike Place Market’s crowded arcade, even if you can’t see pint-sized Carly Calbero, you’ll no doubt hear her. The singer/songwriter can pull off a rousing acoustic version of Michael Jackson’s “Beat It” as easily as she can deliver one of her own self-penned tunes, songs that explode with feeling, carried by her clean and expressive vocals. Listen close and you’ll hear echoes of Tracy Chapman and Ani DiFranco in her gentle vibrato, and don’t be shy to linger for a minute when you catch her outside Pacific Place, where the reverb amplifies the effect. Put some change in her case while you’re at it—you don’t hear heart and soul like this every day.