Herakles says, “The Argen-tinian poet Julio Cortázar, actually / born in Belgium. I don’t / think he wrote about mussels.” No, but he wrote about singing. I suggest you practice this at home before Monday.
Instructions of How to Sing by Julio Cortázar
Begin by breaking all the mirrors in the house, let your arms fall to your side, gaze vacantly at the wall, forget yourself. Sing one single note, listen to it from inside. If you hear (but this will happen much later) something like a landscape overwhelmed with dread, bonfires between the rocks with squatting half-naked silhouettes, I think you’ll be well on your way, and the same if you hear a river, boats painted yellow and black are coming down it, if you hear the smell of fresh bread, the shadow of a horse.
Afterwards, buy a manual of voice instruction and a dress jacket, and please, don’t sing through your nose and leave poor Schumann at peace.