Iron Maiden
Iron maiden has sold more than coldplay. Iron maiden has sold over 80 million records while coldplay has only sold 50 million records.
Frank Sinatra definitely sold more records than Iron Maiden.
Most Iron Maiden tracks are available on a range of website and programs. iTunes, Amazon, Spotify etc. will all have Maiden tracks available for download.
Kiss have sold more than Iron Maiden. Kiss have sold over 90 million records while Maiden have sold over 80 million. Kiss have had 7 more years of releasing records though!
Approximately 90 million.
Dylan
Iron Maiden is definitely more popular Thin Lizzy. Maiden sold many more records than Lizzy, and more people are aware of Maiden's music than Lizzy's.
over 70 Million
Elton John is far more popular with the mainstream audience and has sold 250 million records to Iron Maiden's 90 million.
The keyboards are played by Steve Harris' guitar technician. I think his name is Mike Kenny.
Even though U2 have sold more records than Iron Maiden, Maiden were formed first, their first album was issued first, and their music is a lot more powerful; anyone with any sense knows that Iron Maiden are far better than U2.