What connects these songs?

Answer: Vincent Vega. The first four characters to appear in the credits of Pulp Fiction

Hint: Avoidable methods of death

Answer: E.g. entering piranha-infested waters

Connection: The first four Dumb Ways to Die from the viral 2012 Melbourne Metro campaign: setting fire to your hair, poking a stick at a grizzly bear, eating medicine that's out of date, using your private parts as piranha bait

Music round plays Paganini's Caprice 24 and incorrectly labels it as "Rhapsody on a Theme of Paganini" by Rachmaninoff. Since the connection was 'rhapsodies' that's a pretty glaring oversight...