His daughter, Taryn, talked to People, too, and she revealed that the singer displayed several symptoms in the days leading up to his diagnosis. One of the signs that she said was “super weird,” came during a bowling outing in 2023. She said her father bowled out of turn three times.

He also underwent another brain surgery in January 2024. In the interview published April 30, Bolton said he finished radiation and chemotherapy in October and his most recent scan was clear in early April.

Michael Bolton exclusively opens up to PEOPLE in this week's cover story about facing his glioblastoma diagnosis and facing brain cancer with his family by his side and sense of humor intact.