Robin Thicke Reunites With Paula Patton, Cancels Concert Due To "Unforeseen Vocal Issues."

Robin Thicke canceled his Ontario concert just days after reuniting with wife Paula Patton for the first time since their separation.

Over the weekend, Thicke and Patton spent quality family time with their three-year-old son, Julian, and days later, the singer fell ill.

According to E! News, Thicke pulled out of his Ontario concert, scheduled to take place at Casino Rama on Tues., March 11, due to "unforeseen vocal issues."

On Saturday, March 8, Thicke and Patton were seen together for the first time since their Feb. 24 separation at a Vancouver playground where they appeared to be in good spirits and laughed with one another as Julian played. At one point, they were seen holding each of Julian's hands as he made his way around the playground.

On Mon., March 10, Thicke celebrated his 37th birthday by partying in Hollywood with friends, including Leonardo DiCaprio.

Last month, Thicke postponed the first three shows of his Blurred Lines Tour (in Florida on Feb. 21, Georgia on Feb. 22, and North Carolina on Feb. 25) after battling undisclosed "vocal issues," before making a comeback in Virgina on Feb. 27.

At the time they announced their separation, Thicke and Patton told press, "We will always love each other and be best friends, however, we have mutually decided to separate at this time."

Thicke's Ontario gig has been rescheduled for July 26, 2014.