TMZ spoke to sources who say Keith Urban is going through a midlife crisis. On top of his divorce from Nicole Kidman, the country singer fired his band of 25 years. Per TMZ, Keith's "close confidents" think "this is a midlife crisis"—and it's not just the decision to walk away from his 19-year marriage (reminder: Nicole wanted to make things work). FYI, this update comes amid Rob Shuter's ShuterScoop reporting that Nicole believes that Keith's closest friends were keeping his alleged infidelity a secret. "Nicole feels blindsided not just by Keith but by the silence of the whole group," a source said.