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 sharp ...   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