After three decades out of music, it's great to have the artist formerly known as Cat Stevens back. There's so much we can learn from Yusuf. For example, what made him leave the spotlight, and how can we apply that to Carrie Prejean? And while he didn't reveal that secret on last night's Colbert Report, he still gave a great interview and performance. After the jump, Yusuf performs the title track from his new album "Roadsinger."The Colbert Report airs Monday through Thursday at 11:30pm / 10:30c.