I went to see Stevie Nicks the other week, and she was predictably great, enveloping the audience in her magic, as usual, if without the agitated brio of her heyday.
I was thinking of Stevie as I watched Grace Potter and the Nocturnals perform on the pavilion stage Saturday. They're both brassy blondes with a penchant for soulful turns of phrases and old-fashioned rock, in particular the music of the early 70s.
Only, if Stevie's favorite on-stage move is to play with her shawl, Potter's is to play with her hair. She throws it around like she wants to get rid of it, like it's in the middle of a wind tunnel.
The hair-tossing is one of several rock affectations Potter...