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Discussion in 'General Instruction [BG]' started by Davidoc, Mar 27, 2001.
Can anyone tell me the formula of a 9 Chord?
I'm thinking Dao wants 1-3-5-b7-9, a "formula" for a Dominant 9th chord.
So, with F#9 as the example:
I agree with JimK. The suffix 9 implies a dominant 9th chord. When a ninth chord has no dominant seventh, it needs to be specified i.e. F#maj7-9 or F#6-9. If there are no tensions before the ninth (sixth or seventh), it would be an F#(add 9).
...or possible F#add2, or if there's no third in it (IE the chord was played F#. C#, G#, voiced in fifths) it might be F#sus2, or rather confusingly, just F#2.
There's a big problem with the way chords are named - the conventions are largely based on a system that was laid down about 4-500 years ago, and is now well overdue for an overhaul, but sadly, I don't think the billions of musicians in the world using western naming conventions are going to listen to lil' ole me... )
As for F#9, it is indeed a dominant 7 chord with a 9 on the top.
F#Maj7 with a 9 can just be written as F#Maj9 - that's OK.