Rihanna's Official Second Single "So Hard" Leaks Online

As the world patiently awaits Rihanna's first sit down interview since her February incident involving ex-boyfriend Chris Brown, more new music from her highly-anticipated upcoming album has surfaced on the web.

Her second official single "So Hard" featuring rapper Young Jeezy, follows the album's debut single "Russian Roulette," a dark ballad which came as a surprise to many fans who expected a high-energy dance track.

Rihanna breaks her silence early Thursday morning on Good Morning America in  a segment of her sit down interview with Diane Sawyer. Their conversation will air in its entirety Friday, November 13 on 20/20.