Knowing The Fret Notes
It is sometimes considered a luxury for rockers to know every note on the fret board, but what is vital are the notes of the bottom E and A strings. This is for the purpose of 'bar chords' and 'powerchords'; It lets you translate chords into other positions without looking them up in a book- very handy in a band rehearsal!
When playing standard forms of chords like E, A, C, D, G, these chords are recognised by their finger shape formations rather than the notes they are made of, but bar chords and power chords are the same shapes shifted up the neck to raise the notes.
Because of the way that this works, once you know that the 3rd fret of the bottom E is G you can zip straight to it and shape your bar or power over it achieving a G chord without a second thought.
The frets I've left blank are the 'sharp' (#) of the 'natural' note to it's left. Be aware that just like on a piano⁄keyboard B & E do not have sharps (black keys) after them, they rise straight from B→C and E→F.
What is the meaning of the green or blue coloured notes? Take a close look at the strings and tell me.
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A way to remember the 6 strings' open notes, from fat to thin: E-A-D-G-B-E
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Did You Know...
The string called the "Bottom" string is not the thin one as you look down your guitar, it is the fat bass string. This is because it is the lowest note and you can't turn that upside down!
Also this is why in written guitar tablature the bottom line is your bass string.

