Birthday Party Celebration. Photo Credits
When I was a kid, I was taught by my father to play the happy birthday song in the key of C. Basically, you can play it in any key you like provided that you already know how to transpose the chords. When I grew up, I learned to play the song starting from different keys like D or G.
The last chord family that we will be learning is the C. In musical theory, everything starts with C or the "Do" in "Do-Re-Mi". The key of C is basically the center of the tonal universe and most musicians would agree that it is the easiest key to play in. Maybe, that was the reason why my father taught me to play common nursery rhymes in the key of C including the happy birthday song.
I chose to tackle the C family of chords last because it's so easy to play and it also has lots of chords in its family. But don't worry, you already learned most of the chords when we explored previous chord families (A, D, and G).
