omg YES all these overtones are natural harmonocs on my g string
seems like the composer plays electric guitar
the 7th harmonic is the first tone of the harmonic series to be out of tune compared to its root note and it happens to be the 7th of a normal major scale but a few Hz flat and thus it has its very own unique sound
the next/8th harmonic is then again a 100% in tune clean octave
the 2nd highest note in the audio is the out of tune 7th harmonic