I think you're on the money with this the swing influence wasn't noticed by me at first but checking it out again I totally here it though faintly. I think 2pm has been making the music that they also enjoy with them taking an active role in production and made a song that would seem almost like a ballad at first into a really awesome dance song as well and I think Taeyceons rap and composition skills are fully on display here. He gave the song just enough interest and power to make a really awesome track and 2pm for me has been on hot streak for the last couple of years but sadly they don't seem to getting as much recognition for it.