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			Songwriting Infobox  
 Song ModelSongwriting Lyrics - Melody - Harmony - Rhythm - Form Song Form Title - Chorus - Verse - Prechorus - Bridge Harmony Infobox Major Modes Ionian - Lydian - Mixolydian Minor Modes Dorian - Aeolian - Phrygian - Locrian Other Modes Major Pentatonic - Minor Pentatonic - Major Blues Scale - Minor Blues Scale Key Signatures A-flat - A - B-flat - B - C-flat - C - C-sharp - D-flat - D - E-flat - E - F - F-sharp - G-flat - G Harmonic Tools Modal Comparison Charts - Power Progressions - Cadences - Chord Finder Harmony Lyric - Melody - Harmony - Rhythm - Form Songwriting: Harmony ContentsMajor-Key Power Progressions- I IV
- I IV V
- I VImin IImin V
 
 Variations:- I VImin IV V
- IIImin VImin IImin V
- I IImin IIImin IV
- I V/7 VImin I/5 IV I/3 IImin V
 
 Progressions Leading to V:- IImin IIImin IV V
- IV V
- IImin V
- VImin V
 Minor-Key Power Progressions- Imin bVII
- Imin bVII bVI bVII
 
 Variations:- Imin bVII bVI V
- Imin Vmin
- Imin IVmin
 Mixolydian-Key Power Progressions- I bVII
- I bVII IV
 Dorian-Key Power Progressions- Imin IV
- Imin IImin bIII IImin
 Blues-Key Power ProgressionsRepetitive Progressions: - I7 IV7
- I7 bIII IV
 
 12-Bar Blues:- I7 IV7 I7 V7 IV7 I7 (V7)
 Variations- Change the progression length
- Change the rhythm of one or more chords
- Change the order of its chords
- Remove a chord
- Add a chord
- Replace a chord
- Add a pedal
 Modal Resources
- Meta
