Is that the sound of wedding bells ringing? With just one day away from the big day, media outlets are in frenzy to find out more details about the private�Song-Song couple's�wedding.

According to an exclusive report by Sports Chosun on October 30, longtime friends of the�Song Joong Ki-Song Hye Kyo�couple -�Lee Kwang Soo, actor Park Bo Gum, and Yoo Ah In�- will be taking special roles at their wedding. Previous reports were also made about singer Ock Joo Hyun�singing the congratulatory song.

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On October 30,�Blossom Entertainment told OSEN, "Actor Park Bo Gum will be playing the piano at the couple's wedding."

Lee Kwang Soo's agency King Kong by Starship Entertainment also stated, "Lee Kwang Soo will be attending Song Joong Ki-Song Hye Kyo's wedding.� He will be reciting a letter."

Prior to this, various entertainment affiliates reported, "Park Bo Gum will be performing a special piano serenade for his hyung/sunbae�in congratulating the two people on their wedding day.� 'Running Man's Lee Kwang Soo and best friend Yoo Ah In will each be reciting letters wishing the couple a beautiful, joyous future together."

Song Joong Ki and Song Hye Kyo will be tying the knot on October 31 at Seoul's Shilla Hotel with 250 expected guests. The couple is likely headed to Europe for their honeymoon.

Stay tuned for more coverage.