I have postponed the concert and album release due to my hearing health.

They say he canceled the Goyang concert in September because his symptoms of Eustachian tube dysfunction worsened.

They say they have postponed the release of their new album and are working to regain their health.

I hear that I pushed myself a bit too hard out of my ambition for work,

I conveyed my apologies for not being able to keep my promise.