Apple Music is a dedicated music player made for Apple devices. It has over 70 million songs with features to view lyrics, Airplay, and offline streaming. For Roku users, there is no official channel for Apple Music. But with some little bit of work, you can stream Apple Music on Roku by screen mirroring the music from your smartphone or PC. If you have no clue how to screen mirror Apple Music, read the article below.
Screen Mirror Apple Music From Android
 From the Play Store, search and install Apple Music.
 Launch the app and login with the subscribed Apple ID.
 Swipe down the screen to view the Notification Panel.
 Click on Cast icon from the notification panel.
 From the list of available devices, select your Roku device.
 Get back to Apple Music app and play any of your favorite music.
 Now you can listen to the Music from your Roku device.
Screen Mirror Apple Music From iOS
 Search and install Mirror for Roku from the App Store.
 Add Mirror for Roku on your streaming device.
 Launch Mirror for Roku on your iOS device.
 Select your Roku device and allow permission to mirror notification to your Roku screen.
 Click on Start Mirroring icon and again select Start Broadcast.
 Then open Apple Music and login with your Apple ID.
Note: Apple Music comes built in on all iOS devices.
 Play any music and listen it from your Roku device.
Screen Mirror Apple Music From PC
 From your PC browser, go to music.apple.com.
 Login with your Apple ID.
 Press Windows + P on your keyboard.
 From the Project tab, choose Connect to a wireless display.
 Select your Roku device from the connect tab.
 Play any music album on Apple Music and listen it on your Roku device.
You can also stream Apple Music on Roku by converting the music to Roku compatible format AAC, MP3, WMA, FLAC, and WAV (firmware 5.3 or above) using Apple Music Converter. Once converted, play it via Roku Media player or cast from your Roku Mobile app.
These are some of the possible ways to watch Apple Music on your Roku device. If you want a dedicated audio streaming channel to enjoy music on Roku, try Spotify or Amazon Music on your Roku device. If you have any doubts, make use of the comments section below.