Usher and fellow R&B star Chris Brown have teamed up once again for a sad love ballad titled "All Falls Down."

The dynamic duo, who previously collaborated on "New Flame" off Brown's fifth studio album "X," is now lamenting about the former lovers who broke their hearts.

"She built a bridge out of her own insecurities / No one was brave enough to cross except for me / Here I am," the "I Don't Mind" hitmaker kicks off his latest track. "She built a castle from the piece she took from me / I'm going crazy, think she brought out the worst in me."

Also, the "Loyal" singer gets emotional, as he offers his verse over flute, sparse drums and twinkling piano keyboard. 

"You gotta go I know the time waits for no man / Don't say your words unspoken girl I overstand / Here I am," he croons. "What do we mean? Some questions don't have an answer / Two out of three made me a believer."

Last year, Big Ush discussed the collaborative song he recorded with Breezy during an interview with Revolt. He explained that the song is personal and really offers a look into who they are. 

"The song that we did together, I think it answers a lot of questions," he said. "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," he added.

Check out Usher's "All Falls Down" featuring Chris Brown below. It might end up appearing on his upcoming eighth studio album "UR," which is set for a release this year.