In case you need reminding...published at 18:25 British Summer Time 11 May 2023
Here's a look at who made it through on Tuesday.
Acts from Australia, Belgium and Austria are among those to take the last places in Saturday's Eurovision Song Contest final
Sixteen acts have performed in tonight's semi-final and ten have gone through after a public vote
As well as the contestants, Ukrainian singer Mariya Yaremchuk and drag queens Queen Machine have taken to the stage
Tuesday's semi-final saw other countries including Finland, Sweden and Israel make it through
And the big five (France, Germany, Italy, Spain and the UK) and last year's winners Ukraine are also already in the Grand Final
Liverpool is hosting this year, as the war in Ukraine means last year's winners are not able to
Edited by James FitzGerald and Paul Gribben
Here's a look at who made it through on Tuesday.
Andre Rhoden-Paul
Reporting from the Eurovision Village
I've just got to Eurovision Village - the fan zone where people without tickets for the arena itself will be watching the second semi-final.
Following the downpour, it is quiet but queues are starting to form as people come down to the Village ahead of showtime in a couple of hours.
I'm seeing women wearing brightly coloured wigs, sequinned dresses and lots of Union Jacks as people dress accordingly to the spirit of Eurovision. It's camptastic!
Gem O'Reilly
Reporting from Liverpool city centre
Before heavy rain set in, the sun was out earlier - and people were shining.
Quite literally - there was glitter everywhere.
As I made my way past Pier Head, near Albert Docks, to the fan village, I spotted a family dressed in Greek and Cypriot flags. They’d painted their faces in glitter and were laughing together.
Demi and Magdalena Andreou are mother and daughter, and are super excited to be attending the second semi-final tonight - and supporting Greece and Cyprus.
The Andreou family lives in London but they’re of Cypriot descent and so are here to represent their heritage.
I asked Demi about Victor Veronicos being Greece’s youngest ever act at 16. He’s the same age as her daughter Magdalena.
Demi said:“We are really proud. He’s got a powerful voice - he sings the song really well. We think the Cypriot guys are very good as well, very lively track and brilliant performers.”
Magdalena said: “I think it’s really important that Victor is representing the younger community, which you don’t see very often. It’s a good way to acknowledge us youngsters in the competition”.
Andre Rhoden-Paul
Reporting from the Eurovision Village
"Bustling” is the first word that comes to mind when I think of Eurovision Village.
This is the fenced-off fan zone at Pier Head - behind the grand landmark Liver and Port of Liverpool buildings - for the public to enjoy the spirit of Eurovision.
Many people in Liverpool will not have tickets for the arena itself, so instead will watch the semi-final here.
We have a very very loud main stage, where acts like Eurovision legend Sonia have performed this week, and the English National Opera have entertained folk with an operatic version of Eurovision iconic song Euphoria.
That's a first! There are also lots of bars and food vans, as well as a Discover Ukraine section where people can learn about that country’s culture - with interactive exhibitions - and buy from Ukrainian vendors.
It's a great atmosphere here with people sporting flags from all the competing countries.
Also in the interval, a performance called Be Who You Wanna Be will celebrate how Eurovision is a place for everyone.
Three drag stars will perform with a troupe of dancers to a medley of songs.
The details have been kept under wraps so we’ll just have to wait and see but host Alesha Dixon told The One Show a few weeks ago that it was “amazing” so we’ll take her word for it.
The interval will include a performance titled Music Unites Generations, exploring the connection between generations of Ukrainians and the music they love.
Former Ukrainian Eurovision contestant Mariya Yaremchuk, rapper OTOY and 14-year-old Ukrainian Junior Eurovision representative Zlata Dziunka will all be involved.
Remember that if you’re watching this semi-final from the UK, you can cast your vote on who goes through to the final.
The UK’s Mae Muller is performing later on, which means British voters can join in.
But, as ever, you can’t vote for your own country. And for the first time, countries who are not competing in the contest will also be allowed to cast votes.
Read more about how to vote here, external.
Up until this year the semi-finals had the same voting system as the grand final, in that the vote was split: 50% public vote and 50% jury vote (with the jury made up of music experts from each country).
This year, however, the 20 songs which qualify from the two semi-finals will be entirely decided by a public vote.
The final will still include a jury vote.
You can only vote in the semi-final your country takes part in. You can vote up to 20 times, but you cannot vote for the country you are voting from.
The UK doesn’t take part in the semis because it automatically qualifies for Saturday’s Grand Final as one of the so-called big five (the other countries are France, Germany, Italy and Spain).
And the reason? Cold hard cash. These countries, via their broadcasters, make the biggest financial contribution towards the organisation of the contest.
Despite not taking part, the Big Five are given a chance to vote in one semi-final each.
On Tuesday, viewers in Germany, Italy and France got their chance to vote, while those in Spain, Ukraine and the United Kingdom will get their turn tonight.
Sadly (or not, depending on your musical tastes and loyalties) we had to say goodbye to five acts on Tuesday evening - Azerbaijan, the Netherlands, Malta, Ireland and Latvia.
Here are the performers who made it through to the Grand Final on Saturday:
The show is being broadcast live on BBC One and BBC iPlayer, with radio DJs and Eurovision superfans, Scott Mills and Rylan bringing their expert analysis and colourful commentary to the party.
The show starts at 20:00 BST.
Thanks for joining us for semi-final number two - by the end of the evening, we’ll have the full line-up for Saturday’s Grand Final!
All the action is taking place at the Liverpool Arena near the Royal Albert Dock, which will also be the home of Saturday’s finale.