Who represented Italy at ESC 2015?

What's the name of the ESC 2015 arena?

Russia: Polina Gagarina - A Million Voices

Måns Zelmerlöw represented Sweden in 2015

Australia was pre-qualified for the Grand Final

Pre-qualified: Host (Austria), Special Guest (Australia), Big-5 (France, Germany, Italy, Spain, UK)

Trijntje Oosterhuis from Netherlands finished 14th in Semi-final 1

Netherlands didn't participate in ESC 2015

Russia, Ukraine and Belarus were all participating

Slovenia, Albania, and Romania were the only Balkan-countries participating

Czechia and Cyprus were not participating

Estonia, Latvia and Lithuania were all participating

Azerbaijan won Eurovision 2011 with the song "Running Scared"

Ann Sophie and Andreas Kümmert are from Germany

How much do you remember from Eurovision 2015?