No details on location were provided.

One of their first joint efforts, A Whiter Shade of Pale, reached No.

1 in their native U.K., as well as in Australia, Canada, and several European countries.

Keith Reid obituary

Procul Harum lyricist Keith ReidPhoto by Michael Stroud/Express/Getty Images

It also reached No.

Although not a performing member of Procol Harum, Reid was essential to the groups mystique.

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Reid contributed lyrics to Procol Harum until 2017.

WGA West building in Hollywood

Procol Harum in 1974, from left: Alan Cartwright, Chris Copping, B.J. Wilson, Gary Brooker, Keith Reid and Mick GrabhamMichael Putland/Getty Images

In addition, Reids songs were recorded by Annie Lennox, Willie Nelson and Heart, among others.

Procol Harums official Facebook page offered a tribute to Reid.

We are sad to hear of the death of Keith Reid.

His lyrics were one of a kind and helped to shape the music created by the band.

Our thoughts go out to his family and friends.

Survivors include Reids wife, identified only as Pinkey.