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 s...
Key signatures (sharp and flats) - • Key Signatures - 4 Key...
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: pianistprogram...