Complete the indicated task to unlock the corresponding effect.

Bats Effect: Complete the third challenge on Thriller.
Disco Ground Effect: Complete the third challenge on Rock With You.
Disco Smoke Effect: Complete the fouth challenge on Rock With You.
Latina Dancer Effect: Complete the 4th challenge on Blood On The Dance Floor.
Magic Beggar Effect: Complete the 2nd challenge on Billie Jean.
Motorcycle Effect: Complete the 5th challenge on Speed Demon.
Spotlight Effect: Complete the 5th challenge on Blood On The Dance Floor.