On the 18th, IU held her solo concert ŌĆ£The Golden Hour: Under the Orange SunŌĆØ at the Olympic Stadium in Jamsil Sports Complex. Meeting her fans after three years, she shared, ŌĆ£To be honest, todayŌĆÖs performance was a bit difficult.ŌĆØ ŌĆ£I had some problems with my ears, so I prepared for this concert feeling all nervous. ItŌĆÖs nothing serious, but I couldnŌĆÖt control my ears for the past year,ŌĆØ she went on. ŌĆ£Fortunately, my throat was in good condition, but my ears got worse since the end of yesterdayŌĆÖs concert, so I felt like I was in hell while rehearsing last night and today.ŌĆØ IU added, ŌĆ£Even as I started my first song, I got on the stage thinking, ŌĆśI donŌĆÖt know whatŌĆÖll happen.ŌĆÖ You guys are the ones who really did everything for todayŌĆÖs concert.ŌĆØ ItŌĆÖs said that IU covered her ears during the rehearsals, worrying her fans. It was revealed in ŌĆ£Pieces: 29th Winter,ŌĆØ IUŌĆÖs documentary released earlier this year, that sheŌĆÖs been having hearing issues. She was diagnosed with Patulous Eustachian tube dysfunction, a disorder of the valve of the Eustachian tube that causes it to remain open. When this valve remains open, sound can travel from the nasal-sinus cavity to the ears, allowing you to hear your own voice or your own breathing too loudly, or even the sound of blood pumping. Source (1)