Definition: The term "unsonantal" is a term used in music theory and composition to describe a musical phrase that has no overt sonority or resonance, i.e., it does not have any overt sound or vibration. It can refer to a particular note on a piano scale (a unison), or it could be a solo instrument playing an unaccompanied melody without the use of a harmonica or other instruments. In music theory and composition, "unsonantal" is often used to