Industry WIKI

Broadcast Data Systems (also known as Nielsen BDS, BDS or Luminate BDS) was a service that tracks radio, television and internet airplay of songs. The service, which is a unit of MRC Data, is a contributing factor to North American charts published by co-owned magazine Billboard, including the Billboard Hot 100 and Canadian Hot 100, when combined with sales and streaming data from Sounds

Record sales or music sales are activities related to selling music recordings (albums, singles, or music videos) through physical record shops or digital music stores. Record sales reached their peak in 1999, when 600 million people spent an average of $64 on records, achieving $40 billion in sales of recorded music.