Florida, Sept. 4 -- Singer Lady Gaga postponed her 'Mayhem Ball' show in Miami on Wednesday moments before it was set to begin, citing vocal strain and recommendations from her doctor and vocal coach to call off the performance.

Taking to her Instagram handle, Lady Gaga announced the postponement, sharing that she was 'sorry' and assured her fans of rescheduling the show as quickly as possible.

"I am really so so sorry, but I need to postpone tonight's show in Miami. During rehearsal last night and my vocal warmup tonight my voice was extremely strained and both my Dr and vocal coach have advised me not to go on because of the risk it poses," wrote Lady Gaga.

She stated that she wanted to push through but didn't want to risk permanent ...