Banjo, Ukulele etc.
As the reader can see the extended notes (11th and 13th) can also be flattened or sharpened as shown with the Flattened and Sharpened 9th Chord. As can be seen, there are numerous Chord Shapes which need to be learnt to grasp a full knowledge of those available – and they are not all of them, I'm afraid!
To simplify the chords some notes can be dropped. The 5th is usually the first to go, as it is generally considered not to add any special character or essential function to the chord. This, believe it or not, can include the root especially when playing with a full band where the bass player would have that covered.
Really, the most important notes of any chord are the 3rd and 7th. These are known as "guide tones". Some layouts of extended chords may include nothing more than the root, 3rd, 7th, plus the extension. But this is down to personal choice.
As I do not profess to be a 4 Stringed Instrumentalist, I have not included Chord Charts for those instruments, but for the benefit of Banjo Players this is dealt with very successfully by Andy Allinger on his Web Site:-
There are also similar sites for the Guitar and Ukulele players.
For the Piano or Keyboard Players the problem of 7 note chords is not difficult to deal with if the musician is playing the full chord with both hands. This is not so easy if the musician is a soloist, where they may need to play the Melody Line or improvise with the Right Hand, whilst the Left Hand is playing the chord. There are several different methods of achieving this end which have been used by the Ragtime Pianists and the “Vamping Pianists” (e.g. Fats Waller, James P. Johnston, etc.) who in most cases could easily span a 10th with their left hand (so were able to play the 9th extension of most chords anyway). When it came to the 11th and 13th Chords and all their varieties, they employed several different techniques, one of which was to “roll the chord” as a Glissando from Root to the extended note or to split chord over 2 beats playing the first 4 notes of the chord on the first beat and remaining 3 (or how many were left to play or however they decided to split it) on the second beat. Both of these methods obviously cannot be used if the Chord is to be played as single beat only (see “That's All” below). In those cases the musician would have to play a “cut down” version (similar to the 4 stringed Instruments mentioned above) of the chord in their left hand, whilst playing the melody (or improvisation) in their Right Hand.
Following on from the above I choose to show (below) a couple of examples (amongst many available) of where extended chords have been included in tunes together with example of the use of chords in rapid succession. For the beginner this can be a difficult task, but with practice is achievable. However again in a Band Line up, the rhythm instrumentalists have got to be really on the ball if they decide that they are all going to play the same multi chord parts in a bar together, without losing time and being exactly in sync. For simplicity it might be decided for 2 or more chording Instruments (say Banjo and Piano) to play the chords only on both the first and last beats of a single Bar where 4 chords are shown in the music. In these examples the Band/Musicians may also choose to play these in different key.
The Last 4 Bars of the Song “Sugar” in G Major (click on to see enlarged):