Girls' Generation's Taeyeon made a surprise call on the May 12 broadcast of radio program 'FM Date' to check up on how her fellow member Sunny was doing as the new DJ.

Taeyeon said, "This is Girls' Generation's Taeyeon, who lives with Sunny.  I was listening through a mini-player."  Sunny replied, "I honestly did not know Taeyeon would call me, so I'm caught off guard.  I've just been bombed with my third mental breakdown."

SEE ALSO: Sunny thanks Girls' Generation, Minho, Taecyeon, and more for listening to her 'FM Date'

Taeyeon continued playfully, "I was checking how many times you made a mistake. Let's try to talk about this problem when you come home."  In relation to Sunny's voice through the radio broadcast, Taeyeon said, "Your voice is gentler and nicer than at home.  She's doing very well.  I feel very comfortable listening to her.  I would like Sunny's cheerful and bright voice to act like a vitamin."

Earlier on the show, Sunny had said, "To tell the truth, Taeyeon is listening right now. Taeyeon told me she was going to wait for this time.  Thanks," showing Girls' Generation were as close as ever!