COMPOSER tagging and viewing

[Mike48]

I tag everything with Composer if possible -- and to the extent time allows.

Many computer applications show Composer by default. The multiplatform one that comes to mind is JRiver Media Center. Then Roon, of course.

I don't know about apps for iDevices. Apple has a poor record on this, starting with the idiotic scheme they introduced with iTunes, in which there is one and only one Artist per track. This led to all kind of trouble and problematic work-arounds, especially for classical music lovers. But I hope you find something that does what you want.