Steve Lacy currently has the No. 1 song in the country, “Bad Habit,” a gentle pop earworm that sounds like staring at stars glued to a bedroom ceiling. On Saturday night at a sold-out Fillmore Silver Spring, the audience had to wait until the end of his set to hear it — not that anyone seemed to mind. Youthful yearning is a theme, not just in “Bad Habit” but also in much of the singer-songwriter-producer’s compositions, and it’s one that resonated with a crowd full of Lacy obsessives.
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