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The FM4 Frequency Festival, also Frequency Festival or just Frequency, formerly Vienna City Festival, is a music festival. Until 2008, it took place near Salzburg Austria, usually every August. In 2009, the Festival moved to St. Pölten. It is promoted by one of Austria's national radio stations, FM4, and is generally associated with the alternative part of mainstream music. The lineups accumulate acts of various genres such as rock, electronica and hip hop, usually covering great parts of the German and Austrian alternative, indie and guitar pop scenes, but also featuring well-known international top acts.