The 60th Eurovision Song Contest was held in May 2015 in the capital of Austria, Vienna, the first time Austria hosted the event since 1967. In order to mark the 60th edition of the Eurovision Song Contest, Australia was invited to take part in the Grand Final for the very first time. The the official Eurovision Song Contest logo was refreshed, for the first time since it was launched in 2004. The slogan for the 2015 Eurovision Song Contest was Building Bridges. The theme artwork featured spheres and wave-shapes, symbolising unity as well as diversity. The colours reflected individualism and at the same time building musical bridges, the diversity of the artists, variety of songs and the diverse audience. 27 countries competed in the Grand Final of the 2015 Eurovision Song Contest, the largest number ever. 10 qualifiers from each of the Semi-Finals, the so-called Big Five as well as hosts Austria and special guest Australia all took to the stage.