Conversation so far:
What happened in 2015 to Usher?
On October 16, 2015, Usher released an interactive music video exclusively on the music streaming platform Tidal called Chains
did Usher work with anyone on the interactive music video called Chains?
Usher worked with artists Nas and Bibi Bourelly on the interactive music video Chains.
What is Hard II Love by Usher?
Hard II Love by Usher is an album
Was the album Hard II Love by Usher successful?
It debuted at number 5 on the US Billboard 200, and sold 28,000 copies in the United States in its first week.
Did Usher go on tour for Hard II Love?
What is hands of stone with Usher?
Hands of Stone is a 2016 American-Panamanian biographical sports film about the career of Panamanian former professional boxer Roberto Durán.
was the film Hands of Stone popular?
On Metacritic, which assigns a normalized rating, the film has a score of 54 out of 100, based on 31 critics, indicating mixed or average reviews.

Question: What was his part in the film?
Self-contained rewrite: What was Usher's part in the film Hands of Stone?