Ultra-smooth singer Maxwell's second album, "Embrya," is perched in the "Billboard" Top 20 this week, buoyed by the first single, "Luxury: Cococure," which is also rising up the R&B charts.

But lying in the lap of "Luxury's" success hasn't been easy for Maxwell, as the singer told MTV News that it was difficult to write the song, a personal good-bye to a failed romance.

"['Luxury' was] the biggest pain in the ass to write that I've ever experienced," Maxwell said, "but it was an important song for me, because it was a good-bye to the woman that inspired the first album, because I'm not in that head space anymore."

"[The song shows] I don't need that pain to find some happiness anymore," the singer continued. "I'm cured of that and [my music's] now more of a pursuit of internal luxury for me. Trying to reach for something that isn't about an actual aesthetic or decadence or any of that, but more about reaching that on the inside, so that's what it means."

Maxwell said he plans to a launch a tour of the U.S. in the fall.