Now, though, due to a what Keifer calls "a very serious vocal condition," the Thompsons are taking a short break. Shows through at least June 2 have been cancelled.

"It breaks my heart to tell our fans today that we must cancel our upcoming concert appearances this weekend," Keifer wrote in a statement posted on the band's website. "What many of you may not know is that I have recently been battling a very serious vocal condition. I was urged by doctors to cancel Thompson Square's appearances and go on complete vocal rest several weeks ago; however, neither Shawna nor I wanted to disappoint our fans, which we love and respect dearly.

"So we chose to continue performing our scheduled shows while I remained completely silent offstage in an effort to heal. Unfortunately, at this time, I have been ordered by doctors to take the next step and to cancel this weekend's shows in an effort to heal internally."