X Factor contestant Sam Black had more than one reason to celebrate this weekend.

Not only did he make it through another week of live shows in spite of criticism from judge Simon Cowell about his song choice.

But footage shown on the ITV show also saw Sam duet with his music idol Rod Stewart when he bumped into him in the toilets of the star-studded Pride of Britain Awards.

The unlikely location was the setting for their impromptu rendition of Rod and Ronnie Wood’s hit Mandolin Wind.

Saturday night saw Louis Walsh’s boys, including Douglas plasterer Sam, take on the groups, mentored by Simon Cowell.

For Latin week, Sam was the last of the Saturday night contestants to take to the stage.

He sang La Bamba (Ritchie Valens) and Twist and Shout (The Beatles) mash-up.

Simon told Sam that while his performance was ’energetic and enthusiastic’ it was a song ’we would hear at a wedding’.

He said the choice of song was ’irrelevant and outdated’, adding: ’I can’t see how it’s going to help you do what you want to do.’

Simon pointed the blame at judge Louis, saying that the song had come out of his own jukebox. Fellow judge Sharon Osbourne said she ’really did genuinely like it’.

And judge Nicole Scherzinger agreed with Sharon, saying: ’You made this whole Latin week work for your 60s vibe.’

When questioned by presenter Dermot O’Leary, Sam told the audience: ’I think I made it my own.

’I was so nervous last week I just wanted to have fun.’

The format of the X Factor has changed this year and now sees two categories go head to head on Saturday night and the other two categories compete on Sunday.

Each evening, the act that receives the fewest votes is sent home.

Just two weeks in, Louis has already lost two of his acts.

It leaves just Sam - whose actual surname is Smith - and Lloyd Macey.