Daniel Knighton/Getty ImagesDoors guitarist Robby Krieger has written and recorded a new song called “Music Speaks Louder Than Words,” which will appear in an upcoming documentary about Prince titled Mr. Nelson: On the North Side. The film will focus on the late music legend’s early life growing up on the north side of Minneapolis.

Macy Gray contributing lead vocals.

“Prince was an amazing artist, but he was also such an underrated guitarist,” says Robby.

Mr. Nelson: On the North Side will feature a variety of well-known artists sharing their recollections of Prince and discussing their appreciation of his artistry.

According to IMDb.com, the documentary includes appearances by Krieger, Gray, ZZ Top‘s Billy Gibbons, Randy Bachman, Chaka Khan, Dennis Quaid and ex-Chicago drummer Danny Seraphine.

The 90-minute flick was directed by Kirk Fera, and is expected to premiere later this year.

In other news, Krieger has added a September 14 concert at the Bergen Performing Arts Center in Englewood, New Jersey, to his 2019 tour schedule. The show also will feature Mountain frontman Leslie West. Tickets go on sale this Friday, April 26, at 11 a.m. ET.

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