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When was Bob Dylan's Never Ending Tour?
The Never Ending Tour is the popular name for Bob Dylan's endless touring schedule since June 7, 1988.
How long did Bob Dylan's Never Ending Tour last?
The Never Ending Tour is the popular name for Bob Dylan's endless touring schedule since June 7, 1988.
What songs did Bob Dylan sing on his Never Ending Tour?
Dylan's performances remain unpredictable as he alters his arrangements and changes his vocal approach night after night.
Did anyone join Bob Dylan on his Never Ending Tour?
During the course of the tour, musicians have come and gone as the band continued to evolve. Over the years, many artists have been special guests at shows, playing songs with Dylan & his Band.

Question: How long did they join him for?
Self-contained rewrite: How long did musicians and special guests join Bob Dylan's Never Ending Tour for?