SAM Smith ended their show in Manchester after four songs, just one night before they are due to appear at the Hydro.
We previously reported the Unholy singer had been forced to reschedule their gig at the Finnieston venue from April 22 to May 25 after they became "really unwell" with a virus.
However, Sam, who has been performing across Europe with the Gloria tour, had to end their show in Manchester last night after feeling something was "really wrong" with their voice during the fourth song.
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They said they tried to get their voice back "in gear" but were unable to.
In a statement shared on Instagram, Sam wrote: "Dearest sailors,
"I don't know what to say honestly.
"I fought off a virus a few weeks ago and since then have travelled across Europe and had such incredible shows.
"Today in soundcheck I felt fine and was so excited to give Manchester an amazing show tonight, with a special surprise at the end.
"During my third song, I noticed something was wrong with my voice.
"I prayed it was just my voice waking up for the show but into the fourth song I could feel something was really wrong.
"I came off stage and have tried everything to get my voice back in gear but it won't.
"I am honestly heartbroken I couldn't finish the show tonight for you all.
"I love you all. I'm sorry I'm sorry I'm sorry."
So far, no update has been given about tonight's Glasgow show.