Girls' Generation's Seohyun discussed her experience writing a track for TaeTiSeo's latest album 'Holler' at the unit's showcase on September 16.

Seohyun explained, "'Only U' was described as a song about a guy bringing up that he wants to separate, but that's not it. It's about wanting true love that you want to protect forever."

Tiffany then added, "Seohyun wrote these lyrics while on a trip to the Swiss Alps with her parents. That's really impressive. The competition was intense. There were about 30-40 lyric entries for this song, and after a harsh judging process, Seohyun's was picked."

Fans were more impressed when Seohyun said, "It came easily as I was working where I could see the snowy landscape before me. I wrote it in one day."