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
[This may have the answer you seek.](https://en.wikipedia.org/wiki/Piano_key_frequencies) As noted, individual notes are not major/minor, that’s the relationship between them.
But the linked chart will give you the frequencies for each note you’d need to create a major/minor chord.
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