www.playpiano.com Major chords are composed of the root, 3rd, and 5th of a major scale. And since there are 12 major scales (more if you count all enharmonic possibilities) then there are 12 major chords. Come on over to http and sign up for our free newsletter by email on piano chords and chord progressions if you like this kind of thing and want to learn more.

I have bought one software ” Teachme Piano” which did not work well for me

I want to be able to use the piano on the computer but alot of the programs arnt that great.