2009 in music
This topic covers notable events and articles related to 2009 in music. == Specific locations == 2009 in American music 2009 in Australian music 2009 in British music 2009 in Canadian music 2009 in European music (Continental Europe) 2009 in Irish music 2009 in Japanese music 2009 in New Zealand music 2009 in Norwegian music 2009 in Scandinavian music 2009 in South Korean music == Specific genres == 2009 in rock music 2009 in classical music 2009 in country music 2009 in electro pop music 2009 in heavy metal music 2009 in hip-hop music 2009 in jazz 2009 in Latin music 2009 in opera 2009 in progressive rock == Events == === January === January 8 – Lady Gaga's debut single "Just Dance" hit number one on the Billboard Hot 100 after 22 weeks – the second longest climb to number one since November 2000 (27 weeks).