Tears For Fears kept Bastille's Dan Smith on the song they co-wrote together - but didn't tell him.

The 'The Hurting' hitmakers - Roland Orzabal and Curt Smith - worked with the 'Pompeii' singer and his band's producer Mark Crew on one of their first pieces of music in 13 years, the song 'I Love You But I'm Lost', and admit they should probably pay him for his vocal appearance.

Roland revealed: ''Dan Smith from Bastille is singing on it, I don't think he realises it but we kept it. We may have to pay him.''

The song was born out of him and Dan having a sing-off and competing to be the loudest.

Explaining how it came about, Roland said: ''We were asked to write with the band Bastille so Dan and Mark Crew, the band's producer, ended up in a small windowless room in Battersea throwing around ideas.

''And the words 'I Love You But I'm Lost' came out of the ether.''

Meanwhile, the 56-year-old musician has admitted the duo's last studio album, 2004's 'Everybody Loves A Happy Ending', felt like the end.

He told the Daily Star newspaper: ''Everybody Loves A Happy Ending' seemed like a final album really ... the full stop at the end of a sentence.''

Tears For Fears have seen a resurgence with the likes of Lorde and Kanye West covering their songs, and Curt says he's even had people come up to him and compliment them on covering a song by the 'All Day' rapper, but he actually sampled their song 'Memories Fade' on 2008's 'Coldest Winter'.

He smiled: ''We've had people come up to us after we've played 'Memories Fade' saying: 'I think It's wonderful that you do a Kanye West song.''

'I Love You But I'm Lost' and the track 'Stay' are two new songs on the pair's Greatest Hits album 'Rule The World', which is out now.