Billboard (stylized as billboard) is an American music magazine, originally headquartered in New York City, New York and now owned by Prometheus Global Media. The week's most popular current songs across all genres, ranked by radio airplay audience impressions as measured by Nielsen BDS, sales data as compiled by Nielsen. Daily music news, charts, music downloads, and artist features for rock, pop, country, rhythm and blues, jazz, world, and hip-hop. The Billboard Hot 100 is the music industry standard record chart in the United States for singles, published weekly by Billboard magazine. Chart rankings are based.