Germany at Eurovision 2015: Ella Eyre co-wrote Ann Sophie's entry 'Black Smoke'

Soulful number 'Black Smoke' has pop and jazz influences

Ann Sophie performs 'Black Smoke' at the Eurovision Song Contest 2015 (Photographer Rolf Klatt | copyright eurovision.de)

Chart-topping British singer Ella Eyre has co-written Germany's Eurovision 2015 song entry.

Follow our Eurovision 2015 final live blog here

The 21-year-old has worked on "Black Smoke", sung in the Austrian capital of Vienna tonight by Ann Sophie.

Another act, Andreas Kummert was originally selected to perform "Heart of Stone" but withdrew immediately after being announced as the winner, leaving Sophie to represent her country instead.

"Black Smoke" is a soulful number with clear jazz and pop influences that runs for just over three minutes. Michael Harwood and Tonino Speciale penned it along with Eyre, best known for hit track "Waiting All Night" with Rudimental.

Sophie has said that break-up song "Black Smoke" is about "love, dating, what you have" and how ex-lovers become strangers who "can't say three words".

British singer-songwriter Ella Eyre (Stephanie Sian Smith)

There are 27 countries competing in the Eurovision final - twenty qualified in two semi-finals this week while the 'Big Five' of France, Italy, Spain, Germany and the United Kingdom gain automatic access.

Host Vienna also goes straight through, along with this year's special guest Australia.