Joined: 20 Sep 2009 United States Karma: 9
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there are a lot of people here who know way more about this stuff than i do, but i feel like i can explain things in layman's terms so i'll give it a shot. starting with scales... a scale is just playing a sequence of notes that are the same distance from each other relatively. for instance maybe you've read about the major scale, and how the pattern is "whole whole half whole whole whole half"... steps, that is. if you start with any note and play this sequence it's a major scale. but you can start on C, or you can start on G. each scale has different notes in it. and thusly each is in a different key (C and G respectively). even though they are the same scale.
on the guitar, this basically translates to a different fret on the neck. if you learn the "pattern" of the major scale and play that on the 3rd fret, it's G. if you play it on the 8th fret, it's C.
so now back to your question, if you "solo" you can play a riff that is based in the key of C. if you take that same pattern (play notes with the same relative distance from each other) starting on a different fret, it is in a different key.
one example of this that i discovered recently is the song "say it ain't so" by weezer. in the recorded track, weezer has all of their instruments tuned down a half step. (D#, G#, C#... instead of E A D). so when i first learned it, i tuned my guitar down and learned the song.
since it's way more convenient to have a guitar tuned normally, i retuned the guitar. but you can STILL play the song the exact same way on the guitar. same frets for the chords, same frets for the solo. the only difference is that each note you are playing is 1/2 step higher than it was before. and although i never did figure out exactly what key the song was originally written in, if you play it all a half step (1 fret) up, you are playing the same song, just in a different key.
hopefully that drawn out description helps you understand what keys are. NOW, if you want to be able to solo in a certain key... well, join the club. i am at the point where i can dissect a song and USUALLY (with the exception of the weezer song mentioned) figure out what key it's in based off the solo or the major/minor chord progressions. but as for just picking up a guitar and chugging in the key of X... haven't quite gotten to that point yet.
p.s. i love that your arbitrary key that you used as an example is E#. |