But there is - as one might expect - a marked disparity in how different age groups buy their music.
Music specialists - which includes HMV in the following graph - are heavily patronised by the over-60s.
And 20-29 year olds, rather than teenagers, are the most avid downloaders.
The data also shows that different genres tend to be bought in different ways.
Rock is the most downloaded, as a proportion of purchases. But country fans like to get their music from a music specialist. And MOR [middle of the road] fans tend to pop to a supermarket.