SeeChords

SeeChords helps you learn guitar by displaying real-time chord diagrams overlaid on YouTube videos. When you visit a YouTube video that has chord data available, the extension shows a synchronized chord strip at the bottom of the video with chord names and fingering diagrams that advance automatically with playback. Practice along with any song — see exactly which chords to play and when. You can also submit audio for analysis to generate chord data for any YouTube video. Features include transpose controls, timing offset adjustment, and a scrolling beat-synced chord display.