Like so many terms we use for AC circuits resonant and resonance are terms we also meet when thinking about waves, so yes resonance can be about musical instruments. The box behind the strings on a guitar or violin is there to resonate and so amplify the vibrations of the strings. When you blow into a wind instrument like a flute or trumpet you make the air in the instrument resonate to produce the sound.
Resonance is about matching frequency and happens in lots of other situations.
When you push a friend or younger brother on a swing you push the swing at the same time each swing. If the driving voltage is not at the resonant frequency the current in the circuit will be very much less.