Poland has organised a classical music festival in the capital this autumn, which will pack 70 concerts into a four-day period. The \"Szalone Dni Muzyki\" (Crazy Day of Music) festival, will run from September 29 to October 2 in Warsaw, organisers said, featuring music by Brahms, Liszt, Mahler and Strauss. \"These are short concerts, each lasting around 50 minutes, with ticket prices that put them within the range of a broader public,\" the festival\'s French artistic director Rene Martin told reporters. Tickets cost 10 zloty (2.50 euros, $3.60). The festival, in its second year, is a spin-off of France\'s \"La Folle Journee\", held in the city of Nantes in Brittany, western France. A total of 27,000 people attended the 2010 edition, but organisers are hoping to double that this year.