Dutch developer Speak has released Ferry Corsten 20 Years: what appears to be an official iPhone app to celebrate Corsten’s two decades as a dance music producer.
The app includes an hour-long mix including 34 of the DJ’s hits, as well as “beautiful pictures of Ferry’s face morphing through the years”, and tracklistings from his various albums. We’re guessing Corsten didn’t have to spend more than $1 million on this anniversary app either, thus passing what Music Ally hereby dubs The Sting Test. Or possibly failing it – we haven’t worked out which yet.

