In 1969 he lit the concert that would define his career and make him a public figure. Monck was hired to plan and build the staging and lighting for the Woodstock Music &amp; Art Fair's "Aquarian Exposition" music festival. Paid $7,000 for ten weeks of work, much of his plan had to be scrapped when the promoters were not allowed to use the original location in Wallkill, New York. The stage roof that was constructed in the shorter time available was not able to support the lighting that had been rented, which wound up sitting unused underneath the stage. The only light on the stage was from spotlights.