The biggest selling 12" single ever? Blue Monday. | New Order's Blue Monday isn't just a classic hit, it holds the record for the most commercially successful 12" single ever made. Here's
![Gaga Daily on X: ".@OfficialCharts have revealed Lady Gaga's top 20 best-selling songs in the UK. Her latest single “Shallow” is her second biggest hit, and is just 80k chart sales away Gaga Daily on X: ".@OfficialCharts have revealed Lady Gaga's top 20 best-selling songs in the UK. Her latest single “Shallow” is her second biggest hit, and is just 80k chart sales away](https://pbs.twimg.com/media/EO92lrLWsAAJybr.jpg:large)
Gaga Daily on X: ".@OfficialCharts have revealed Lady Gaga's top 20 best-selling songs in the UK. Her latest single “Shallow” is her second biggest hit, and is just 80k chart sales away
![Adele's 'Hello' Has Biggest Sales Week for a Single Since Elton John's Princess Diana Tribute in 1997 Adele's 'Hello' Has Biggest Sales Week for a Single Since Elton John's Princess Diana Tribute in 1997](http://static.billboard.com/files/media/BB-biggest-sales-week-download-2015-billboard-embed.jpg)