I’m not sure how to explain it, every chord that has a 7 in it (which I’m still not sure what it means) sound the same, in a kind of way. Again, im not sure how to articulate it correctly. If anyone can help, I’d appreciate it!
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Musical scales have 7 notes. A major chord uses the 1st, 3rd and 5th notes of the scale. A major 7th chord uses the same notes, plus the 7th note.
(The 8th note of a scale is the same as the 1st; that’s where the 8 comes from that makes the word “octave”, even though there are only 7 different notes.)
The C major scale goes C, D, E, F, G, A, B, C, so a C major chord consists of C, E, G (in any order) and a C major 7th chord consists of C, E, G, B. It’s easier to see looking at a piano keyboard.
To do a the major scale for any note, start at the note and go up in steps of 2, 2, 1, 2, 2, 2, 1 keys (including the black). Combining this with the above, you can make a major chord for any note by starting with that note and going up in steps of 4 and 3 keys. For a major 7th chord, go up in steps of 4, 3, 4 keys.
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