Kelly Clarkson has not seen her divorce coming, the singer and presenter tells

The Kelly Clarkson Show on

Tuesday

.

"Divorce is never easy, especially since Brandon and I both come from families of divorced parents," Clarkson said of the broken relationship with husband Brandon Blackstock.

"It's about more than just my heart because we have four children."

"To protect the children", Clarkson does not want to reveal too much about her private life.

The

well-known singer

from hits like

Because Of You, Since U Been Gone

and

My Life Would Suck Without You

says that music is her way of processing her feelings.

Clarkson, responsible for eight albums, therefore says she started as a songwriter on the advice of her mother.

Clarkson and Blackstock have been married since October 2013 and have two children together, where Blackstock also has a son and daughter from a previous relationship.

In June, it was announced that the former talent show winner

American Idol

had filed for divorce earlier that month.