Conversation so far:
What does the article say about white light?
In 1971, Clark released his second solo album, White Light.
Was the album a success?
Launched to considerable critical acclaim, the album failed to gain commercial success, except in the Netherlands.
What did clark do after the failed album?
In the spring of 1971, Clark was commissioned by Dennis Hopper to contribute the tracks "American Dreamer" and "Outlaw Song" to Hopper's film project American Dreamer.

Question: Who worked on White Light with Clark?
Self-contained rewrite: Who worked on White Light with Clark?