Taeyeon revealed, “Before we left to film the music video,
I met with my brother for a meal. ‘I’m going to New Zealand,
if you don’t have anything to do,
do you want to come?’
My brother has a lot of friends in New Zealand.”
She continues, “Throughout filming, however, he looked really bored,
so we gave him a role as a passerby,” and commented on her own acting, “I also acted a little, he was better than I was.”
“I” is a medium tempo track with a strong electronic guitar melody with lyrics that is said to reflect Taeyeon personally.