What do Billie Eilish, FINNEAS, a popular video game and a GRAMMY®-winning guitar trio have in common? As it turns out, quite a bit! The String Revolution has teamed up with acclaimed cellist Tina Guo for “Bad Zombies,” an inventive instrumental that combines Billie Eilish's hit “bad guy” with “Crazy Dave's Theme” from the video game Plants vs. Zombies.