I bought a song using the Nokia Music application on my Lumia 920. The first attempt to download started and then stopped within a second of starting. No sign of any sort of progress bar. Mind you, this would be the first time I tried downloading with the Nokia Music application. I tried again and that failed as well. I find this to be poor application design. The download service in the application should be more robust and should only report a song as being downloaded when it is completely downloaded and not just when the download just about got started.
This sort of thing will steer me clear of using Nokia Music in the future. I still don't have my song. Before anyone suggests to try the web site from PC I did that too and it seems that I used all of my retry downloads for that song.
This is very poor. I use my cellphone primarily to listen to music as I am not one of those that needs to be wired 24/7 and as such I sometimes buy a song on a whim.