I’m trying to program a song using note frequencies and when I look up the notes they are all major (like C which has a frequency of 261), but then in the music sheet there are major and minor notes and I don’t know the difference in Hz. I should also say I don’t know anything about music and I don’t really grasp the concept of chord and note and the difference between them.
In: Engineering
C major isn’t the name of a note. It’s the name of a **chord**. A chord is several notes played all at the same time. Specifically, C major is the C, E, and G notes played all together. C minor is the same, except with a Eb rather than than an E.
You can find tables that list the notes that make up [major chords](https://en.wikipedia.org/wiki/Major_chord) and [minor chords](https://en.wikipedia.org/wiki/Minor_chord) on wikipedia. There are also lots of other kinds of chords besides just major and minor (a common one you might see is a [7th chord](https://en.wikipedia.org/wiki/Seventh_chord), where another note added is on top of a major or minor chord, or a [suspended chord](https://en.wikipedia.org/wiki/Suspended_chord), where a different note is used in the middle).
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