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CHORD FORMULAS © The basic premise of "Chord Formulas" is that there is, in certain terms, a recipe of how to construct a chord, any chord. This recipe is called the chord formula. With this formula you can unerringly construct that chord starting with any root note (tonic) you wish. Readers of Film Score Rundowns may find this technique useful when identifying chords on their own. Using a keyboard or simply a picture of one, you can count the steps given in a formula. For example, the chord formula for the basic major triad is 5-4. If you begin, say, with the C note as the root note, count up chromatically (half-steps or semi-tones) five steps starting with that root note as the "1" count or step. In this case, C to E equals five steps. To elaborate, C to C# [or Db enharmonically] are 2 steps. C to D are composed of thee steps (C-C#-D or C-Db-D). C to D# [or Eb enharmonically] are composed of four steps (C-C#-D-D# or, if you prefer, C-Db-D-Eb). Then, ...