Meaning of the word "call the tune" in English

What does "call the tune" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

call the tune

US /kɔl ðə tun/
UK /kɔl ðə tjuːn/

Idiom

to be in control and make the important decisions

Example:
In this company, the CEO always calls the tune.
She's the one who calls the tune in their relationship.