Girls Generation members are very supportive of their leader and main vocalist Taeyeon who debuts as a solo singer with "I."

On Oct. 6, Taeyeon dropped her solo album and then released the music video for its title track on YouTube. The music video earned millions of views in a few hours. Taeyeon also scored an all-kill on real-time music charts.

On Oct. 8 Sooyung posted a photo of Taeyeon on Instagram. She wrote in Korean, "While it is very different from the Kelly Clarkson song I first listened to ten years ago, the feeling is the same. I like it. It feels nostalgic. She's been wanting this. It's making everybody sentimental. Congrats, Taengoo."

The Soshi seniors said they will bring her to the club if she breaks first place for nine weeks in a row.

A photo posted by Sooyoung Choi (@hotsootuff) on Oct 8, 2015 at 6:42am PDT

On Oct. 9, while Yoona was on her way to a photo shoot she snapped a photo of herself in earbuds telling her fans to join her as she listens to "I."

A photo posted by @yoona__lim on Oct 8, 2015 at 9:36pm PDT

Meanwhile, the group's aegyo princess Sunny had Taeyeon as guest on her MBC FM4U radio show "Sunny's FM Date."

The two talked about Taeyeon's homebody personality. It was revealed that Taeyeon can stay at home for a whole day. Tae plays a lot with Tiffany's dog.