"He who pays the piper ..."

[mir12480]

Dear all,

"He who pays the piper calls the tune"

What does this adage mean?

Thanks in Advance

[Supergirl]

If you fund something or put the money down for something, you should be able to make the decisions about it. For example: If I hire a band for an event, I can say what type of music I want them to play.