+**A4c** primarily denotes an [A major](/wiki/A_major) suspended fourth chord, a harmonic structure where the third is replaced by a perfect fourth. This creates a gentle, open tension within a musical [progression](/wiki/progression). Its distinct quality often evokes a sense of longing or spaciousness in compositions.
+## See also
+- [Chord](/wiki/chord)
+- [Suspended Chord](/wiki/suspended_chord)
+- [Harmony](/wiki/harmony)
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