Usher has changed since having children.

The 'OMG' hitmaker - who has sons Usher V, six, and Naviyd, five, with ex-wife Tameka Foster - admits he has grown stronger both because of his kids and also tragedies such as the death of Tameka's 11-year-old son Kile Glover in 2012.

He said: ''Having children changes how you look at life, what matters, what's a priority. And then you have a few uphill battles - well, that makes you even more resilient.''

The 36-year-old singer is a hands-on dad and loves spending as much time as possible with his two boys.

He told USA Today newspaper: ''I'm with my children all the time in Atlanta. When I'm on tour, they come in and out.

''Usher's more active; I can be out in the park with him for two hours, just throwing a ball around. Naviyd loves to read, loves to see shows. I love to have him with me in New York.''

Usher is currently on tour and managed to win over one of his toughest critics - his youngest son - at a show in Madison Square Gardens last week.

He laughed: ''He was sitting with his grandma [and] he went from, 'I don't like your music' to 'I liked your show!' ''