The 31-date tour kicks off on January 27 in Miami. They'll still play the live shows and will recruit touring musicians to stand in for Harris. They say his departure isn't permanent.

They say in a statement: "Due to illness within his family, we would like to announce that Mitch Harris will unfortunately not be performing with us for the near future. We stress that this is not a permanent arrangement, although we are unsure exactly when Mitch will return under the circumstances."