The tour was plagued by troubles with Bono's voice due to both excessive use and illness - he stated in concert that he caught "some pretty psychedelic germs" in Australia and that they were "having their Annual General Meeting" in his throat. These vocal troubles meant three Sydney concerts had to be postponed. Later, severe troubles meant concerts in Dortmund and Amsterdam had to prematurely conclude; two other Amsterdam shows were cancelled and replaced by four shows in Rotterdam, causing the tour to spill over into 1990 instead of ending on New Year's Eve at Dublin's Point Depot as planned. However, when Bono's voice was not troubling him, he had an impressive singing range, with the falsetto later mastered starting to seriously appear, but without sacrificing the powerful depth of his lower singing range.