Song is not a luxury, but a necessary way of being in the world. If you are cut off, in pain, estranged, numb — sing, give voice to anything. It needn't sound pretty. Simply, bravely, open despite the difficulty, and let what is in out, and what is out in. Sing and your life will continue.
Best of all is to preserve everything in a pure, still heart, and let there be for every pulse a thanksgiving, and for every breath a song.