Chord Database: List of chords of the category maj (page 27)

Chord	Chord Chart	Chord Sound
A7 A dominant seventh Chord Family: 7 (Frequently used) Guitar shapes and related scales - A dominant seventh - A7 Piano shapes and related scales - A dominant seventh - A7
A7b5 A seventh flat fifth Chord Family: 7b5 (occasionally used) Guitar shapes and related scales - A seventh flat fifth - A7b5 Piano shapes and related scales - A seventh flat fifth - A7b5
A7#5 A seventh sharp fifth Chord Family: 7#5 (Rarely used) Guitar shapes and related scales - A seventh sharp fifth - A7#5 Piano shapes and related scales - A seventh sharp fifth - A7#5
A9 A ninth Chord Family: 9 (occasionally used) Guitar shapes and related scales - A ninth - A9 Piano shapes and related scales - A ninth - A9
A9b5 A ninth flat fifth Chord Family: 9b5 (Rarely used) Guitar shapes and related scales - A ninth flat fifth - A9b5 Piano shapes and related scales - A ninth flat fifth - A9b5