As Spotify wavers around the breakeven point, the deal with UMG is good news for royalty costs and thus for the likely advent of the IPO rumoured for autumn 2017

Royalty costs will reduce if Spotify reaches the subscriber growth targets that have been agreed – these have not been disclosed, so are hard to track

Question marks persist over whether a two-week optional windowing of new releases on the premium tier will significantly drive upgrades from the free tier

Streaming is now mainstream and we predict 113% growth in expenditure on subscriptions for 2015-18 in the top four markets (US, UK, Germany and France)

Free vs paid-for streaming is the central question for the music ecosystem: free yields fractions of pennies, making subscription the only credible business model

Market leader Spotify is facing competition from tech giants Amazon, Apple and Google, with deep pockets, for whom content is a pawn in a larger game