A 4-3 suspension is a type of dissonant interval where a note from the previous chord is held over into the next chord, creating tension. The suspended note resolves downward by step to create consonance.
Related terms
Resolution: The movement from dissonance to consonance, providing closure and stability.
Non-chord Tone: A pitch that does not belong to the current chord but adds melodic interest.
Tonicization: The temporary establishment of a different key within a composition before returning to the original key.