A#sus4 – La# Suspended Fourth
In music theory, A# suspended fourth chord is built on A#-D#-E# formation: root-perfect fourth-major second. This suspended fourth chord has a formation A#-E#-A#-D# from basses to trebles in the guitar.
This chord may be derived from a major triad or minor triad. In music theory, suspended fourth chords are built by three different notes and chords’ suspend function is concluded by exchanging third interval to a perfect fourth interval from root. These chords’ main function is giving a suspend and resolution effect to its original(expected) triad form.