Tyler James, Vince Kidd, Leanne Mitchell and Bo Bruce are the four singers that triumphed through to The Voice final on Saturday.
Surprisingly, two of the favourites from the BBC singing contest, Ruth Brown and Jaz Ellington, were sent home after failing to win enough votes from the public.
Tom Jones said that his eliminated act Ruth, who was the bookmakers' favourite to win the competition will still be a "star."
"I will make sure of that, this girl has got something special. I'm going to do everything I can possibly do to help this girl."
And Will.i.am told his rejected act Jaz: "It's not everyday you get to meet people that are blessed with a gift like [you]."
Max Milner from team Danny O'Donoghue and Becky Hill from team Jessie J were also eliminated from the competition.
Meanwhile, Kylie Minogue performed her latest single Timebomb in hotpants and a string vest top, accompanied by dancers wearing little more than swimming costumes. The Aussie pop princess, whose career has spanned 25 years, told the contestants: "Don't berate yourself when things don't go your way, we all have highs and lows."
Last night's semi-final, which included an appearance by Cheryl Cole, was watched by the lowest audience of the series.
The show drew just 4.5 million viewers on average. The programme is now pulling in less than half the audience it attracted at its height during the early stages of the contest. At one stage in April the show had 10.7 million.
It was revealed that on next weeks final the coaches will perform a medley of each other's greatest hits.
What do you think of the results? Are the right people through to the final?