The 44-year-old singer played the first date of her 'Elusive Chanteuse World Tour' at the Makuhari Messe in Tokyo. But during her rendition of 'Vision of Love' - her debut single from 1990 - Carey's voice cracked and she couldn't hit her trademark high notes, reported TMZ online.
A video of her struggling on stage was posted on Instagram and resulted in a backlash on social media for the R&B legend - who has hit the road in support of her new album 'Me. I Am Mariah ... The Elusive Chanteuse'.
Another disappointed fan posted on Instagram: "Stick a fork in her she done.