announced at the end of September. This is often followed by fervent speculation over who will perform the songs. Songwriters that qualify must provide interviews to SVT, attend a press conference before the competition, and remain open to promotional appearances if their song reaches the final. Artists and wildcards SVT selects performers for the entries. Artists who perform the demo of a song automatically enter the competition; they must perform their songs if suitable alternate performers cannot be found. The artists' songs risk disqualification if they refuse. In the past, this rule led to the disqualification of, among others, Carola's "" in 2003 and Stephen Simmonds's "So Good" in 2006. SVT may also give songs to other performers without considering the interests of the demo artist. This prevented the Brandsta City Släckers (in 2004) and Pernilla Wahlgren (in 2005) from performing the songs they had submitted. Replacements for disqualified songs fare unpredictably at the competition. In 2006, "Naughty Boy" by Hannah Graaf (the replacement for Simmonds' song) finished second to last in its heat. In 2002 and 2007, by contrast, the replacements performed by Jan Johansen and Måns Zelmerlöw reached the final ten. The contestants that will perform the twenty-eight qualifiers from the preselection are announced in late November. Singer-songwriters are common. As such, artists often confirm that they will participate before the official announcement. The wildcard (joker) system was introduced in 2004 to diversify the music featured. Four artists, one in each heat, were invited by SVT to enter a song of their choice into the competition, provided it does not breach the rules. The wildcard songs and artists were announced in January. Since the wildcards' introduction, three have won the competition. The wildcard system was discontinued in 2013. Hosting The venues for each year's Melodifestivalen are announced in September of the preceding year. The heats are held in towns and cities throughout Sweden. The 16,300-capacity Avicii Arena in Stockholm has hosted the final since the heats were introduced in 2002, through to 2012. In 2013, the final moved to the newly built Friends Arena in Solna Municipality, Stockholm County. The Scandinavium in Gothenburg was offered the 2005 final, but turned it down as it clashed with a Frölunda ice hockey match. The event spent its early years at one venue: Cirkus in Stockholm, which hosted the first ten competitions. It has hosted the final of Melodifestivalen seventeen times