Pakistani popular music or shortly Pak-pop music refers to popular music forms in Pakistan. Pakistani pop is a mixture of traditional Pakistani classical music and western influences of jazz, rock and roll, hip hop and disco sung in various languages of Pakistan, including Urdu. The popularity of music is based on the individual sales of a single, viewership of its music video or the singer's album chart positions. Apart from within Pakistan, Pakistani pop music has also achieved an influential following and popularity in neighboring countries and is listened by members of the Pakistani diaspora, especially in the Middle East, Europe and North America.