App displays no Artist

[Alandbush]

Intriguing problem.

Following @simbun post, I also downloaded and tried the StreamMagic android app.
However, what I saw was different to @simbun and similar to the OP.

To cut a long story short, I created a number of 'test' albums/tracks and determined the following.

Individual Album display
- Album value = Album tag
- Album Artist value = in the following priority

1. Composer tag
2. Album Artist tag
3. Artist tag
   

Individual track display
- Title value = Title tag
- Artist value = in the following priority

1. Composer tag
2. Artist tag
   

I hope that is clear, i.e. Composer tag value takes precedence, if present, over either Album Artist or Artist.