in the first period the students are learning the C, G, and F chord:
in a movie you can see how to be played the 3 basic chords at the right way. pay attention: play with the right fingers!
CM = dont exist(!); big mistake because some kind of home-keyboards shows it in the display. it means a
C-major (C), and therefore it shows a capital M. But as a chordsymbol it dont exists!.
C4 = this means: Csus4.
C2 i got no idea: it means Csus2 (c,d,g) or, Cadd2 (c,d,e,g).
a few examples, how to use the 'virtuele toetsenbord';
you want a Esus4: click root the E, and chords: sus4.
you want a F-minor blues-scale: click F. and scale: Minor Blues.
at the right, a little more difficult, you can type a formula. use the Enter as Scale: type 4,3 and it will get a major chord. Or 4,3,4 if you want a minor chord. If you change the root; dont forget to click the 'show'