Seohyun shared a never-before revealed story regarding Girls’ Generation‘s performance on the David Letterman Show. On the February 28th episode of SBSStrong Heart‘, Seohyun remarked, “We were aware of how huge this show was in America, enough for member Tiffany who grew up in the States to cry after we received the invitation to perform. But in the beginning, we had discussions of not going through with it.” Read more on Allkpop.