Conversation so far:
What was Black Messiah by D'Angelo?
his third studio album
Was the D'Angelo Black Messiah album successful?
The album was met with universal acclaim from critics and it currently has a 95/100 mean score on review aggregator Metacritic.
Were there any notable singles released from the D'Angelo Black Messiah album
Black Messiah was promoted with the release of the single Really Love
Are there any other interesting aspects about this D'Angelo Black Messiah album article besides that the album was met with universal acclaim from critics and it currently has a 95/100 mean score on review aggregator Metacritic?
D'Angelo supported Black Messiah with a tour called The Second Coming.
What did D'Angelo do in 2015?
In June 2015, D'Angelo confirmed to Rolling Stone that he was working on more material for a new album, calling it a companion piece to Black Messiah.
Did D'Angelo eventually complete the new album that he was working on, a companion piece to Black Messiah?
Did D'Angelo do anything else notable in 2015 besides working on his new album?
D'Angelo performed Prince's Sometimes it Snows in April on The Tonight Show Starring Jimmy Fallon in April 2016 accompanied by Maya Rudolph and Gretchen Lieberum

Question: Why did he perform a Prince song on The Tonight Show?
Self-contained rewrite: Why did D'Angelo perform a Prince song on The Tonight Show starring Jimmy Fallon in April 2016 accompanied by Maya Rudolph and Gretchen Lieberum?