Video: ‘Thriller’ Flash Mob with Boston Symphony Orchestra & Pops in Jamaica Plain By David Ertischek on November 6, 2018 Video: ‘Thriller’ Flash Mob with Boston Symphony Orchestra & Pops in Jamaica Plain This Halloween in Jamaica Plain wasn’t just costumed kids going from house-to-house asking for candy. This year, professional musicians and dancers made their way across JP creating flash mobs in an homage to Michael Jackson’s “Thriller.”