'Yoo Hee Yeol's Sketchbook' invited Tiffany to the stage on June 24!

On this day, she said many different things, reminiscing about her debut days as well as talking about current girl groups and her solo promotions.  She said, "Seeing TWICE who was on music shows with me, I really felt that I was now a senior."

Girls' Generation made their debut back in 2007 - so they're nearing their 10th anniversary. MC Yoo Hee Yeol asked, "Did you know at the time that you would debut in a girl group with many members?" and she replied, "I was surprised, but I still accepted it. Still, my parents were very worried, wondering, 'How will it do well with nine people?'"

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She also revealed that she reverted back to her rookie days while preparing for her solo debut album.  She said, "I practiced singing for four hours a day and dancing for six hours a day."  She then said the difference between group and solo activities was that she went from singing ten seconds to three minutes and thirty seconds.

MC Yoo Hee Yeol asked if she personally wanted to compliment herself on anything while promoting her solo music.  She replied, "Because I've been on stage for ten years, I am used to it, but I still get nervous and excited.  I want to compliment myself on still having that passion for music," then shouted, "Good job, Tiffany!"