Key Friend

Discover chord patterns and progressions for any key

🎹 How to Use Key Friend

🎵 Select a Key

Start by choosing your musical key:

  • Root Note: Pick the tonic (C, D, E, etc.)
  • Mode: Choose between Major and Minor keys
  • The chord progression will update automatically

🎯 Build Progressions

Create chord progressions easily:

  • Click chord cards to add them to your progression
  • Use Roman numeral notation (I, ii, V, etc.)
  • See chord relationships and functions

🎧 Audio Playback

Listen to your progressions:

  • Click the play button to hear your progression
  • Adjustable tempo and playback settings
  • Individual chord playback available

💡 Popular Progressions

I - V - vi - IV The "Pop" progression (C - G - Am - F)
ii - V - I Jazz standard turnaround
vi - IV - I - V Alternative pop progression
I - vi - ii - V Classic doo-wop progression