connecting to Alexa speakers to play Apple Music via AirPlay

I'd like to find a way to play Apple Music through my Alexa speakers *from my iPhone or MacBook*.

I've enable AppleMusic as a skill through my Alexa App on my phone. I am able to ask Alexa verbally to play Apple Music and that works fine.

However, I can't choose an Alexa speaker from a list of speakers via AirPlay when I open Apple Music on any of my devices. I'd like to play Apple Music from the app through my Alexa speaker. Being able to skip around a playlist, rewind songs, or just play music generally is much easier through the AppleMusic App than using verbal queues with Alexa.

Spotify works fine.

How can I solve this?

Thanks, jk