Future Rock Hall of Famers: When Will Today's Stars Be Eligible?
John Mayer performs at Madison Square Garden Getty

John Mayer has cancelled the remainder of his European tour and is returning home to recover from an intestinal illness, according to a statement released last night on the musician's website. Mayer is missing gigs in Amsterdam, Madrid and Manchester, as well as the May 31 show in Copenhagen.

According to Billboard sources, Mayer contracted an intestinal illness after the first night of two planned Copenhagen concerts, with dizziness, nauseau and dehydration making him unable to perform. Mayer is returning home to recover under a doctor's supervision. Mayer's summer tour of North America, which begins July 17 in Raleigh, NC and runs through the middle of September, will not be affected.

Mayer continues to tour behind his most recent release, "Battle Studies," which entered the Billboard 200 at No. 1 upon its release in Nov. 2009.