On: Ask HN: How Can I Learn Music Theory?

[_4smp]

by it's function in the overall harmonic scheme, and through it's positioning and usage relative to the other notes.

"tonic" is another way of referring to the "key" of the song.

[avodonosov → _4smp]

I know these words, question is exactly how these relationship work that a note becames tonic?

If I'm writing a song and want to make La the tonic, what should I do?