This is a prototype of a device to listen to Spotify, that was the degree project of Jordi Parra, an Interaction Design student at the Umeå Institute of Design. There is a very strong resemblance to the work of Dieter Rams for Braun.
The device has two small buttons to skip to the next and previous track in the queue. The big button is the volume control and reader for the tags.
At the moment this device is not available for sale.