Microphone slider not showing up on Apple Tv music app

Hi AldeBEARan,

Our apologies for the confusion.

For Apple TV, the compatibility is as follows:

If you don't see the Mic button

- To use Apple Music Sing, you need an Apple TV 4K (3rd generation) updated to the latest version of tvOS. 

Not sure which Apple TV you have?

- If you have an Apple TV 4K (3rd generation) with the latest version of tvOS and don't see the Mic button, Apple Music Sing might not be available for that song.

See lyrics and sing in Apple Music on your Apple TV

Without the latest Apple TV 4K, you won't see the option to control the vocals volume.

Thanks for using the Apple Support Communities.

Hello AldeBEARan,

Welcome to Apple Support Communities. It looks like your have=ing a question about Apple Music Sing as you don't see the Mic button, and we'd be happy to provide some guidance.

If you don't see it, it might be due to one of the following reasons:

If you don't see the Mic button

Apple Music Sing is supported on the following iPhone and iPad models:

• iPhone 11 and later or iPhone SE (3rd generation) updated to the latest version of iOS

• iPad Pro (5th generation and later), iPad Air (4th generation and later), iPad mini (6th generation), or iPad (9th generation and later) updated to the latest version of iPadOS 

Not sure which iPad model you have?

If you want to AirPlay to HomePod, first tap the Mic button on your iPhone or iPad.

If you're using a supported iPhone or iPad and don't see the Mic button, Apple Music Sing might not be available for that song.

See lyrics and sing in Apple Music on your iPhone or iPad

Also, check out this helpful link:

Apple introduces Apple Music Sing

We hope this information is useful. Kind regards.