how can i create or define chord in a song

[mahmudpilot]

how can i make chord of a song. if a tune stand on C note (major scale) then am i create it C chord? or stand on E note then am i creat it C chors?
i want to know, how can i create or define chord in a song.

 

[geoffreak]

Are you using Garage Band, or are you talking about music in general?
This is the "Buying Tips, Advice and Discussion" forum and neither of those scenarios should go in here.

 

[GoCubsGo]

I'm lost on what you're asking. Do you want to play a chord on an instrument and then see what chord it is you're playing?