These major or minor chords contain three different notes: a root (eg the E note in E), a 3rd interval up from the root (eg the G# note in E) and a 5th interval up from the root (eg the B note in E).

We’ve all played them, but how many of us can say we know how 7th chords actually ... we then find the b/minor 3rd (C), 5th ...

Add the seventh note (B) to make a Cmaj7 chord. Maj9, maj11 and maj13 chords simply add their respective notes to maj7 chord (D is the 9th, F is the 11th and A is the 13th). Major 7th chords have a ...