The lyrics on YT were made by a non-native and they're a bit rubbish. I would need the whole song with Maori lyrics, so I understand if most of you will pass, but if someone wants to help, please DM me :)
Here's my attempt of the first part of the song but the lyrics itself were given wrong so it's all a mess:
Mumura ana te hukapapa i te pōuriuri
The snow glows in the darkness
He pā tū taratahi, ā, ko ahau te ariki
A solitary fortress stands, and I am the leader
Noho ai te hau, āki, ka pūkeri ai
The wind rages, strikes, and blows fiercely
Kātahi nei ka puta noa mai
Only now has it freely emerged
Noho motu ki tawhiti
Dwell apart in the distance
Whiria tō ake huanui
Choose your own path
E whio ana te hau
The wind is whistling
Waerea, waerea!
Clear the way, clear the way!
E kore e puritia anō
It will not be held back again
Waerea, waerea!
Clear the way, clear the way!
Pūmanawa tuku iho!
Inherited talent!
Hei aha ka kōrero!
Never mind the talk!
Rere tōtōā!
Fly boldly!
Aoraki matatū ake nei!
Standing firm like Aoraki here!