Once when Sri Krishna was playing on his flute, Radha eyed it with jealous eyes and asked, "What has your flute done to enjoy the blessing of being held to your lips while you play upon it hour after hour?" In answer, Sri Krishna took the flute from his lips and turned it so Radha could see inside, saying, "Look, it's completely empty, so it is easy for me to fill it with the melody of my divine song." We, too, can become full of the Lord's infinite love and abiding joy when we empty ourselves of all that is selfish and separate.

Eknath Easwaran, The Bhagavad Gita for Daily Living: Volume 1