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Was Janis Joplin part of the Kozmic Blues Band?
After splitting from Big Brother and the Holding Company, Janis Joplin formed a new backup group, the Kozmic Blues Band.
Did Janis Joplin tour with the Kozmic Blues Band?
Janis Joplin toured through Europe with the Kozmic Blues Band.

Question: Were there any well known artists that were part of the Kozmic Blues Band?
Self-contained rewrite: Were there any well known artists that were part of the Kozmic Blues Band?