Are you ready to rumble? Or mamba? Northern Light Opera Company presents “West Side Story” from July 31-Aug. 2 and Aug. 6-8 at Armory Square in downtown Park Rapids. Two teens from rival street gangs meet and fall in love in this acclaimed musical. “West Side Story” was born of the collaborative efforts of three theater geniuses – composer Leonard Bernstein, lyricist Stephen Sondheim and choreographer Jerome Robbins. “Leonard Bernstein’s music provides some significant challenges to singers and instrumentalists.