A-cappella group Sweet Sorrow has become a member of the fixed line up on 'Immortal Song 2'!

After making their first guest appearance earlier this month and wowing the audience as well the the other performers with their amazing harmony through Shim Soo Bong's "Young Sun", the producers of the show have decided to bring the group in as part of the fixed line up.

A representative of the show stated, "With the recruitment of vocal group Sweet Sorrow, we believe the second half of the year's shows will liven up." The group completed their first recording as a fixed performer on August 6th.

The Lee Seung Hwan special of 'Immortal Song 2' featuring the current line up as well new recruits, Sweet Sorrow and f(x)'s Luna will be broadcast next week.

Source + Photo: Sports World via Nate