It was a bittersweet goodbye for Super Junior singer Cho Kyuhyun, as the 25-year-old star filmed his last episode of the South Korean variety show "Mamma Mia" on Friday night.

Kyuhyun was forced to leave "Mamma Mia" after Korean Broadcasting System (KBS) executives moved the show to Wednesdays, which conflicts with his other program "Radio Star."

The Super Junior told the director of "Mamma Mia" that he didn't blame him for the change, since it was clearly an executive decision.

"I'm sorry that I have another program on Wednesday nights," Kyuhyun said. "It's not really your fault, because it's the chief director who decided [to move 'Mamma Mia' to Wednesday night]."

"I learned a lot from Park Mi Sun, Lee Young Ja and my love for [the 'Mamma Mia'] family has grown deeper," the singer added. "I'm saddened to leave the show."

When Lee suggested that Kyuhyun blow off his commitment to "Radio Star" to remain on the show, the singer's answer was simple: he's been there longer.

"I've been there for two years. I can't [leave 'Radio Star'] because of loyalty," Kyuhyun said.

One member of the production crew reflected for the KBS cameras about what a fun experience it was having the Super Junior superstar on the show.

"It was fun to work with Kyuhyun," the crewmember said. "Although all of the mothers who worked with Kyuhyun will miss him, now we meet him as a competitor, fueling our fighting spirit."

And the Super Junior singer could be jumping ship just in the nick of time, as the future for "Mamma Mia" remains uncertain.

Back in August, KBS execs announced that the show would be cancelled, they just weren't sure exactly when.

"Mamma Mia' will be cancelled" a network exec told the website allkpop.

"Although the exact date of its cancellation has not been confirmed yet, a pilot broadcast will air during Chuseok and a regular program will be confirmed afterwards."

Kyuhyun's final appearance on "Mamma Mia" will be broadcast on Sunday. Next week, the show will begin airing in its new timeslot on Wednesday nights.