Chord Finder

The chord finder analyzes the intervallic relationships between the notes you select. It compares these intervals to known chord structures in music theory and identifies potential matches. For example, if you select the notes C, E, and G, the finder recognizes the intervals as a major triad (root, major 3rd, perfect 5th) and identifies it as a C major chord.

Many combinations of notes can be interpreted as different chords depending on context. For example, the notes C, E, G, and B could be a Cmaj7 chord or an Em7/C chord. The chord finder shows all valid interpretations, sorted by likelihood and simplicity. Musical context (such as the key of the piece or the bass note) often determines which interpretation makes the most sense in actual music.

Sharp and flat notations refer to the same pitch in different ways. For example, C# and Db are the same key on a piano but are written differently depending on the musical context. Generally, the choice between sharp or flat notation depends on the key signature: keys with sharps typically use sharp notation (F#, C#, etc.) while keys with flats use flat notation (Bb, Eb, etc.). Our chord finder lets you choose your preferred notation for the results.

If you're unsure about all the notes, start by selecting the notes you're confident about. The chord finder will suggest possibilities based on those notes. You can then experiment by adding or removing notes to refine the results. On instruments like guitar, you might try identifying chord shapes visually or using a reference chart. On piano, playing each note individually can help clarify what you're hearing.

Yes, the chord finder can identify many extended and altered chords commonly used in jazz, such as 7th, 9th, 11th, and 13th chords, as well as chords with alterations like b9, #11, or b13. However, very complex polychords or highly altered chords might be identified as their component parts or as simpler chords with extensions. Jazz harmony often allows for multiple valid interpretations of the same collection of notes.

Consider these factors to determine the most appropriate chord name:
- The bass note (lowest note) often defines the chord, especially in standard harmony
- The key of the music piece helps identify which interpretation fits the context
- The function of the chord in the progression (where it leads to and comes from)
- The simplest explanation is often correct (Occam's razor applies to music theory too)
- Voice leading considerations can suggest which interpretation makes the most sense

Absolutely! The chord finder is a valuable tool for transcription. When transcribing by ear, you might identify several notes but be uncertain about the chord name. Enter the notes you hear, and the finder will suggest possible chords. This can significantly speed up the transcription process and help you understand the harmonic structure of the music you're analyzing.

The chord finder identifies the fundamental chord type regardless of inversion. For example, C-E-G, E-G-C, and G-C-E will all be identified as C major chords, though the finder may specify the inversion. However, inversions can sometimes create ambiguity—for instance, the notes E-G-C could be interpreted as a C major chord in first inversion or as an E minor chord with a missing fifth and an added sixth. The finder will present both possibilities when such ambiguities exist.