When you sing bhajans, the vibration of sound energy gets absorbed into every atom of your body. This kindles the energy in you and brings up the consciousness. Your entire body gets soaked in energy. Transformation happens.
A microphone absorbs sound and converts it into electricity, the body absorbs sound vibration and converts it into consciousness. If you sit and listen to gossip or violent music, then that energy gets absorbed by your body and does not give a nice feeling. When you hear the knowledge or chant with all your heart, that elevates your consciousness.
An ancient proverb in Sanskrit says that the words of rishis and enlightened ones are translated into experience immediately.
