有關和弦的問題

圖片參考：http://hk.yimg.com/i/icon/16/3.gif
假設你所有和弦是以C大/小調作為基楚的,主音tonic是C所以:
加九和弦 = major 9th,即major 2nd+one octave, eg. 即C major的C-E-G-B-D音

大六和弦 = major 6th chord,通常出現於小調, 由某個調的第六音組成的大和弦,在C minor的Ab-C-Eb音;
屬七掛留四和弦 = Dominant 7th ,由那個調的5th,7th,9th,11th音組成,即major chord+7th note;若是C major則是G-B-D-F的音組成的和弦

半減和弦 = half diminished V(dm),即minor chord+7th note,以 c minor 為例,則是G-Bb-D-F音

減七和弦 = fully diminished (dd),每個音之間的距離一律是minor 3rd,例C-Eb-Gb-Bbb音,即是Tonic + minor 3rd + minor 3rd + minor 3rd

增三和弦 = Augmented chord,Tonic + Major 3rd + Major 3rd,即C-E-G#音

屬七增五和弦 = Dominant 7th (Augmented 5th)
Tonic + Major 3rd + Major 3rd + diminished 3rd,即C-E-G-B音

希望幫到你啦!
圖片參考：http://hk.yimg.com/i/icon/16/3.gif

Grade 5 theory dsitinction and Grade 8 theory holder,
Miss Amy

加九和弦 = 唔知咩來
大六和弦 = 唔知咩來
屬七掛留四和弦 = Dominant 7th (suspension 4th)
Tonic + Perfect 4th + Major 2nd + minor 3rd
半減和弦 = half diminished (dm)
Tonic + minor 3rd + minor 3rd + Major 3rd
減七和弦 = fully diminished (dd)
Tonic + minor 3rd + minor 3rd + minor 3rd
增三和弦 = Augmented
Tonic + Major 3rd + Major 3rd
屬七增五和弦 = Dominant 7th (Augmented 5th)
Tonic + Major 3rd + Major 3rd + diminished 3rd