Define and explain Resonance?

Resonance is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at specific frequencies.

Frequencies at which the response amplitude is a relative maximum are known as the system's resonant frequencies or resonance frequencies. At resonant frequencies, small periodic driving forces have the ability to produce large amplitude oscillations, due to the storage of vibrational energy.

The quality of sound, being deep, full and reverberating, if I'm correct ... maybe it's like ok well think our low pitch intruments, like the tuba and drums, could be music with that