Is it possible to use FairPlay and HLS with audio only streams?

I've been searching all over to find an answer to this question. I know that FairPlay/HLS supports audio Streams since there's obviously audio in video, but I'm wondering if this is practical? Also is there any way to stream FairPlay DRM encrypted content without HLS? or if I use HLS could I create only a single audio bitrate format in order to save on hosting costs? I work on and Audio Book app that requires DRM for some content.

Also any links to documentation, videos, tutorials, blog posts... etc on the topic would be awesome too.

Very much appreciate anyone who takes the time to answer this. I wish this was more explicitly talked about on the Apple Dev site, but it seems very geared towards video streaming.

Have you found a way to solve your issue?

Is it possible to use FairPlay and HLS with audio only streams?
 
 
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