Recorded in three weeks, and released in February 1994, Dookie became a commercial success, helped by extensive MTV airplay for the videos of the songs "Longview", "Basket Case", and "When I Come Around", all of which reached the number one position on the Modern Rock Tracks charts. The album went on to sell over 10 million copies in the US. At a performance on September 9, 1994 at Hatch Memorial Shell in Boston, mayhem broke out during the band's set (cut short to seven songs) and by the end of the rampage, 100 people were injured and 45 arrested. The band also joined the lineups of both the Lollapalooza festival and Woodstock '94, where the group started an infamous mud fight. During the concert, a security guard mistook bassist Mike Dirnt for a stage-invading fan and punched out some of his teeth. Viewed by millions by pay-per-view television, the Woodstock 1994 performance further aided Green Day's growing publicity and recognition, and helped push its album to eventual diamond status. In 1995, Dookie won the Grammy Award for Best Alternative Album and the band was nominated for nine MTV Video Music Awards including Video of the Year.