Music streaming from websites such as Spotify to help dictate singles chart

The official UK top 40 will take audio streaming data from Spotify, Deezer, Napster, Xbox Music, Music Unlimited and Rara, as well as sales figures from thousands of retailers and online digital download sites to compile the popular weekly music chart. In an effort to keep the process fair, 100 streams will be the equivalent of one single purchase or download when compiling the chart. – Hannah Ellis-Petersen, The Guardian