With 2013 a crucial year for the prospects of Microsoft’s Windows Phone, the platform is at least becoming better stocked with music apps. 7digital announced a Windows Phone 8 app yesterday, updating its existing Windows Phone 7 version. It’ll help people search for music, get recommendations, and download previous purchases stored in their 7digital lockers. Meanwhile, streaming service Rdio has followed a similar upgrade path, porting its Windows Phone 7 app to Windows Phone 8 while adding a few improvements. The latter include improved online playback, the ability to browse recommendations, and more ‘Metro’ interface elements to fit in with Windows Phone’s design ethos. Microsoft may be pushing its own Xbox Music service hard on Windows Phone 8, but there are at least an increasing number of competitors to keep the market fresh.