How to get the tonic sol-fa of any song without knowing the key

In my first video on this subject, I showed how to get the tonic sol-fa of any song with the knowledge of the key but I realise some people don't know the key or know how to get the key so I have made this video to show how to get the tonic sol-fa of any song without knowing the key.

How to get the tonic sol-fa of any song -    • How to get the tonic sol-fa of any song  
Key signatures (sharp and flats) -    • Key Signatures - 4 Keys each in the s...  

Camera Gear Used:
Samsung Note 10
iPhone 7 Plus
Faine FA-250 Microphone

Music Made With:
Macbook Pro 13
Samson USB C01U PRO Condenser Mic
AKAI Professional - Mini Midi keyboard

Graded with Color Finale Pro in FCPX
Edited in Final Cut Pro X

Pianistprogrammer - A pianist first then a programmer
Website: https://pianistprogrammer.com