Rehearsals - boys
On Tuesday, all four of the remaining acts in Your Country Needs You hit the rehearsal room to prepare for Saturday's semi-final.
Although suffering with a nasty winter cold, Mark was determined not to let a bunged-up nose and sore throat stop him from singing Rod Stewart's "I Don't Want To Talk About It".
Mark appeared to really 'get' the sentiment of the song, and when the vocal coach asked him if he was singing it about someone in particular, Mark became a bit emotional. This really impressed the vocal coach - she said it meant that Mark was really connecting with the lyrics.
In the choreography room, Mark was back to his usual cheerful self and was clearly having a ball with his new pop-star image. He effortlessly went through the routine for Justin Timberlake's "Rock Your Body" - Mark's now really looking forward to showing off his moves on live TV!
The Emperors of Soul talked about their confidence being dented after being in the "danger zone" on Saturday. However it wasn't long before confidence was restored as they went through their dance routines.
The boys are focussing a lot of rehearsal time on their rendition of Take That's "Patience" as they feel it is a difficult, modern song that could be the decider in winning votes on the night...
Don't miss Eurovision: Your Country Needs You. Saturday 24 January, 6.30pm, BBC One / BBC HD.
And don't forget to have your say about the songs that the acts will be performing on our Message Boards.