Katie Couric became emotional in an interview that aired on ABC Friday featuring the mom and girlfriend of late "Clouds" singer-songwriter Zach Sobiech, the Star Tribune reports.
The "Katie" talk show host honored the 18-year-old Sobiech, who died May 20 from osteosarcoma, a rare form of bone cancer. Couric held back tears as she talked with family and friends of the Stillwater High School student.
In addition to talking with Soebiech's girlfriend, Amy Adamle, Couric spoke with the musician's closest friend, Sammy Brown.
The talk show host also spoke with Zach Sobiech's mom, Laura Sobiech, via Skype.
Couric -- who lost her husband of nine years, Jay Monahan, to cancer in 1998 -- admitted she was "a mess" in the interview.
"Clouds" meanwhile, continues to rise on the music charts. It topped the Billboard Digital Rock Singles chart earlier this week, and became the No. 1 song on iTunes mere hours after Sobiech's memorial service last week.
Singer-songwriter Jason Mraz -- one of many celebrities who took part in a video tribute to Sobiech that has been downloaded 2 and a half millions YouTube users -- made a surprise appearance on Couric's show, saying, "I've never heard a song with such purpose and needed to be in the world."
In a preview of the interview, Couric says she first watched the video with her daughters, and noted how the "were all moved by his grace and courage and humor."
See the Couric speak with Laura Sobiech on the show below.