Wiz Khalifa: I'll Earn $100 Million This Year

High Earnings: Wiz Khalifa says he'll make $100 million in 2012.

Perched in a smoky penthouse recording studio in Chelsea last night as the sun slipped into the Hudson River below, Wiz Khalifa found himself in a milieu conducive to making grand pronouncements.

About a dozen music journalists mingled with a handful of label executives, recording engineers and plus-ones; even the 24-year-old rapper's Rostrum Records labelmate (and fellow Forbes 30 Under 30 member) Mac Miller was in attendance.

The...