Lucy gives a legendary performance of Evanescense's 'My Immortal'.
The remaining rock star progenies are asked what rock 'n' roll means, but coming up with an answer isn't that easy.
Lara rocked out to Avril Lavigne's 'I'm With You' in the premiere of Rock The Cradle
The Doobie daughter performs her dad's hit tune 'Long Train Runnin''.
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