How did Billboard change its ranking methodology in response to Gangam Style ?
According to the British Phonographic Industry 's report based on Official Charts Company sales data , thanks to Psy 's song and Carly Rae Jepsen ’s " Call Me Maybe , " pop became the UK ’s favourite musical genre of the year , taking the lion ’s share of the singles market ( 38.5 %) in 2012 .