Adele has £50m, but how did she make it?

[MitchT]

I was just reading that Adele is the UK's richest 'young' musician, having amassed a personal fortune of £50m. We're always hearing about how piracy and streaming has pulled the rug out from under the feet of recorded music revenues, so how does a musician make this sort of money? How would Adele's £50m break down if it were illustrated as a pie chart?

[MitchT]

Zoon said:

Is Calvin Harris not young at 31 with £70m?

Apparently the category specifically refers to musicians under 30.

Bradgate said:

I believe Adele writes her own songs which is, and always has been, where the real money is made.

Not if all your music is being consumed via Spotify, or illegally, as seems to be de rigueur these days, which is why I’m wondering how the percentages of income from all revenue streams break down.