Audio Title

[AswinParanji]

Hi, We have multiple audio with language as English, but contains audio from actor, narrator, directors cut, default audio and audio description for accessibility. Within the mpd I need to have title for each of those audio so that the player can parse the mpd/hls displays in my player as

1. Default Audio
2. Audio Description
3. Actor
4. Directors Cut
5. Narator

Appreciate if you can let me know what attributes needs to be used to set audio's title.

Thanks Aswin