Usher has recorded a collaboration with Chris Brown.

The "Good Kisser" singer has confirmed the troubled R&B star - who is currently serving a prison sentence for violating the terms of his probation, stemming from a 2009 assault on pop star Rihanna - will feature on his upcoming eighth studio album and it seems the track will reflect on Chris' recent troubles.

"The song that we did together, I think it answers a lot of questions. There's a lot mystery, I think, about a lot of things and the reality is we all are human. And though we may all experience hardship, it's in those times that people should really rally and remember why you fell in love with the artist, why you fell in love with the person," Usher said.

The 35-year-old star admits he hasn't had a chance to talk to Chris, 25, since he was imprisoned, but says the "Loyal" singer was in a "good place" after leaving rehab for anger management issues in February.

"We have not been able to talk, but when he first came out of rehab, there was a lot of conversation back and forth and he was in a really good place, good positive place," he added.

While Chris is expected to remain in prison until June, his latest single "Loyal" - which was released shortly after he was jailed - has enjoyed success in both the US and UK singles charts. However, plans to release a duet with pint-sized singer Ariana Grande had to be put on hold following his imprisonment. Chris and Ariana had recorded a music video for "Don't Be Gone Too Long" and begun a countdown to the song's premiere in the days before he was incarcerated.