Spotify may be one of the world's leading music subscription services, but currently only offers a free, ad-supported model to folks listening along on the desktop. According to a new report from the Wall Street Journal, that might be about to change:

Spotify AB is planning a free, ad-supported version of its streaming-music service on mobile devices, according to people familiar with the matter, after previously making mobile users pay a monthly fee.

The new ad-supported offering will allow nonpaying mobile users to play a limited number of songs on demand, but will mostly serve up music based on the user's input

Spotify Premium customers already get all the music they can handle through the service's various mobile applications, but the introduction of a free, ad-supported mobile model would put it directly up against Apple and iTunes Radio. As with Spotify, Apple offers a paid, ad-free model on top of the free service, and arguably a slightly stronger music catalog to back it up. But, as mobile becomes ever more important, Spotify currently freezes out its users that don't pay for the top tier subscription plan.

The deal to secure the new addition to the mobile offering is reported to have been in the works for about a year, following negotiations with Sony, Universal and Warner, the big three music labels. Press have been invited to an event in New York next week, but with little to indicate what may be on the cards.

So, if Spotify brought ad-supported, free streaming to your iPhone or iPad, would you be more or less likely to give it the nod over iTunes Radio?

Source: Wall Street Journal