A cappella group Sweet Sorrow will be making their first appearance on KBS's�'Immortal Song 2'!

This week's summer special will feature not only regulars like Super Junior's Ryeowook, Ulala Session, Sonya, Ailee, INFINITE's Sunggyu, Younha,�and Hong Kyung Min, but new performers including�Sweet Sorrow,�2PM's Junsu, 8Eight's Lee Hyun, Cha Ji Hyun, and At.

Well-known for their wit and amazing a cappella skills, Sweet Sorrow's first performance will showcase the group's powerful vocals and harmony with Shim Soo Bong's hit from the 80's, "Young Sun", on this week's broadcast.

The broadcast will also feature a surprise guest, comedienne�Shin Bora,�in an exciting duet performance with Ailee. The summer special will run on July 21st and July 28th, so keep your eyes open for some fresh new performances!

Source + Image: My Daily via Naver