After tirelessly travelling across the United Kingdom, it was decision time for Mika and Jon Batiste as the day of the final concert arrived.
After an emotional series of performances, Mika and Jon chose Diana to be awarded the performance of the night.
Diana was lost for words as she received the award and applause from the auditorium, but went on to thank Mika and Jon for "everything".
But the surprises didn't stop there, as Mika and Jon revealed that each of the seven finalists would be gifted a piano, following on from last season's tradition.
Catch the moment below.
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Claudia Winkleman and Mika previously caught up with RadioTimes.com ahead of the launch of season 3, as they gushed over previous winners of the show.
The Piano is available to watch on catch-up on Channel4.com.
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