The formal invention of “One” from A Chorus Line is dazzling; in line with the show’s meta-plot, the song deconstructs itself in real time as you listen. That makes it stand out in this collection of Broadway tunes, which are more likely to floor you with emotional complexity. Songs like “Comfort And Joy” or “Count On Me” cut good jokes with wells of fear and insecurity. On “Nowadays,” Roxie and Velma get the last (deliciously menacing) laughs. “Skid Row” is a gut punch that builds to a desperate, beautiful breakdown.