Changes

*Major chord - consists of three notes with an interval of a major third followed by a minor third: 1-3-5, C-E-G

*Major chord - consists of three notes with an interval of a major third followed by a minor third: 1-3-5, C-E-G

*Minor chord - the third is dropped one half step: 1-{{music|♭}}3-5, C-D{{music|#}}-G

*Minor chord - the third is dropped one half step: 1-{{music|♭}}3-5, C-E{{music|♭}}-G

*Power chord or open fifth - the third is dropped (common in hard rock): 1-5, C-G

*Power chord or open fifth - the third is dropped (common in hard rock): 1-5, C-G

*Seventh chord - adds a fourth note, which depends on the key or sound desired.

*Seventh chord - adds a fourth note, which depends on the key or sound desired.