Sus#4 chords
Chords sus#4 They are made up of 3 notes that correspond to grades:
Root - Augmented Fourth - Perfect Fifth (R - #4 - 5)
The letter representing the chord name plus the word «sus#4", for example Do sus#4 is represented as Csus#4
They are found naturally in the Lydian mode of the Major Scale.
These chords are quite dissonant, as they include the tritone (R - #4) and a minor second interval (#4 - 5).
They work in genres like Black metal, Progressive Metal, Math rock, Jazz fusion, Jazz, etc…