Quote:
Originally Posted by Maddog54
Boy did that just answer a question that's been pondering me....I just figured I'd learn later on what it means to play in a certain key. Or did I get the wrong idea here? Playing in 'D' means A,D,G chords and Playing in C means C,F,G chords? So if I hear that a song is in the key of D, does it mean that A, D, & G are the chords for the song(plus of course minors and 7ths like you said, Tim)? This may be a major breakthrough for me LOL.........now why exactly are some chords called "7th" or "SuS" or "ASuS"? Thats my next question to ponder.
|
You're on the right track Maddog. If a song is in the key of D (major) then it has been written by using mostly notes from the D major scale, and yes, the most important chords in that key are D G & A.
7th chords are chords that contain a note which is 7 scale degrees (letter names) higher than the note the chord is named after.
So the chord A7 contains the note G (which is 7 letters higher than A).
Major chords are made from the first, third and fifth notes of the major scale and SUS means that scale note 4 is used instead of 3
A major = A, C# & E (1, 3 & 5)
A SUS = A, D & E (1, 4 & 5)
There's more to it than that and, as Stratrat says, you can find lots of info in the theory forum.