Isaac Asimov - Catastrophes!

And this is the sound, the ultimate sound, the very special sound he had trapped for them:

On the eleventh moon of the world called Chill by its inhabitants, there is a flower whose roots are sunk deep, deep into the water pools that lie far beneath the black stone surface. This flower, without a name, seems to be an intricate construct of spiderwebs. There are, of course, no spiders on the eleventh moon of Chill, Periodically, for no reason anyone has ever been able to discern, the spiderweb flowers burst into flame, and very slowly destroy themselves, charring and shriveling and turning to ashes that lie where they fall. There is no wind on the eleventh moon of Chill.

During the death ceremonies of the spiderweb flow ers, the plants give off a haunting and terrible sound. It is a song of colors. Shades and hues that have no counterparts anywhere in the stellar community, DeilBo had sent scavengers across the entire face of Chill's eleventh moon, and they had gathered one hundred of the finest spiderweb flowers, giants among their kind. DeilBo had talked to the flowers for some very long time prior to the Gathering. He had told them what they had been brought to the Maelstrom to do, and though they could not speak, it became apparent from the way they straightened in their vats of enriched water (for they had hung their tops dejectedly when removed from the eleventh moon of Chill) that they took DeilBo's purpose as a worthy fulfillment of their destiny, and would be proud to burn on command.

So DeilBo gave that gentle command, speaking sounds of gratitude and affection to the spiderweb flowers, who burst into flame and sang their dangerous song of death-

It began with blue, a very ordinary blue, identifiable to every delegate who heard it. But the blue was only the ground coat; in an instant it was overlaid with skirls of a color like wind through dry stalks of harvested grain. Then a sea color the deepest shade of a blind fish tooling through algae-thick waters. Then the color of hopelessness collided with the color of desperation and formed a nova of hysteria that in the human delegates sounded exactly like the color of a widower destroying himself out of loneliness.

The song of colors went on for what seemed a long time, though it was only a matter of minutes, and when it faded away into ashes and was stilled, they all sat humbled and silent, wishing they had not heard it.

Stileen revolved slowly in her jar, troubled beyond consolation at the first sound the Gathering had proffered. For the first time in many reborn lifetimes, she felt pain. A sliver of glass driven into her memories. Bringing back the clear, loud sound of a moment when she had rejected one who had loved her. She had driven him to hurt her, and then he had sunk into a deathly melancholy, a silence so deep no words she could summon would serve to bring him back. And when he had gone, she had asked for sleep, and they had given it to her… only to bring her life once again, all too soon.

In her jar, she wept.

And she longed for the time when she could let them hear the sound she had found, the sound that would release her at last from the coil of mortality she now realized she despised • with all her soul.

After a time, the first delegate-having recovered from DeilBo's offering-ventured forth with its sound. It was an insect creature from a world named Joumell, and this was the sound it had brought:

Far beneath a milky sea on a water world of Jou- mell's system, there is a vast grotto whose walls are studded with multicolored quartz crystals whose cy- toplasmic cell contents duplicate the filament curves of the galaxies NGC 4038 and NGC 4039, When these crys tals mate, there is a perceptible encounter that pro duces tidal tails. The sounds of ecstasy these crystals make when they mate is one long, sustained sigh of rapture that is capped by yet another, slightly higher and separate from the preceding. Then another, and another, until a symphony of crystalline orgasms is pro duced no animal throats could match.

The insect Joumelli had brought eleven such crystals (the minimum number required for a sexual coupling) from the water world. A cistern formation had been filled with a white crystalline acid, very much like cum-inoin; it initiated a cytotaxian movement; a sexual stimulation. The crystals had been put down in the cistern and now they began their mating.

The sound began with a single note, then another joined and overlay it, then another, and another. The symphony began and modulations rose on modulations, and the delegates closed their eyes-even those who had no eyes-and they basked in the sound, translating it into the sounds of joy of their various species.

And when it was ended, many of the delegates found the affirmation of life permitted them to support the memory of DeilBo's terrible death melody of the flow ers.

Many did not.

"… the frequencies of their limits of hearing… a calendar going forward and backward but not in time, even though time was the measure of the frequencies as it was the measure of every other thing (therefore, some say, the only measure)…"

W. S. Merwin, "The Chart"

She remembered the way they had been when they had first joined energies. It had been like that sound, the won-derfttl sound of those marvelous crystals,

Stileen turned her azure solution opaque, and let herself drift back on a tide of memory. But the tide retreated, leaving her at the shore of remembrance, where DeilBo's sound still lingered, dark and terrible. She knew that even the trembling threads of joy unforgotten could not sustain her, and she wanted to let them hear what she had brought. There was simply too much pain in the universe, and if she-peculiarly adapted to contain such vast amounts of anguish-could not live with it… there must be an end. It was only humane.

She sent out a request to be put on the agenda as soon as possible and DeilBo's butlers advised her she had a time to wait: and as her contact was withdrawn, she brushed past a creature reaching out for a position just after hers. When she touched its mind, it closed off with shocking suddenness. Afraid she had been discourteous, Stileen went away from the creature quickly, and did not reach out again. But in the instant she had touched it, she had glimpsed something… something with its face hidden,,, it would not hold…

The sounds continued, each delegate presenting a wonder to match the wonders that had gone before.

The delegate from RR Lyrae IV produced the sound of a dream decaying in the mind of a mouselike creature from Bregga, a creature whose dreams formed its only reality. The delegate from RZ Cephei Beta VI followed with the sound of ghosts in the Mountains of the Hand; they spoke of the future and lamented their ability to see what was to come. The delegate from Ennore came next with the sound of red, magnified till it filled the entire universe. The delegate from Gateway offered the sound of amphibious creatures at the moment of their mutation to fully, land-living living vertebrates; there was a wail of loss at that moment, as their chromosomes begged for return to the warm, salty sea. The delegate from Algol CXXIII gave them the sounds of war, collected from every race in the stellar community, broken down into their component parts, distilled, purified, and recast as one tone; it was numbing. The delegate from Blad presented a triptych of sound: a sun being born, the same sun coasting through its main stage of hydrogen burning, the sun going nova-a shriek of pain that phased in and out of normal space-time with lunatic vibrations. The delegate from lobbaggii played a long and ultimately boring sound that was finally identified as a neutrino passing through the universe; when one of the other delegates suggested that sound, being a vibration in a medium, could not be produced by a neutrino passing through vacuum, the lobbaggiian responded-with pique-that the sound produced had been the sound within the neutrino; the querying delegate then said it must have taken a very tiny microphone to pick up the sound; the Lobbaggiian stalked out of the Gathering on his eleven-meter stilts. When the uproar died away, the agenda was moved and the delegate from Kruger 60B IX delivered up a potpourri of sounds of victory and satisfaction and joy and innocence and pleasure from a gathering of microscopic species inhabiting a grain of sand in the Big Desert region of Catrimani; it was a patchwork quilt of delights that helped knit together the Gathering. Then the delegate from the Opal Cluster (his specific world's native name was taboo and could not be used) assaulted them with a sound none could identify, and when it had faded away into trembling silence, leaving behind only the memory of cacophony, he told the Gathering that it was the sound of chaos; no one doubted his word. The delegate from Mainworld followed with the sound of a celestial choir composed of gases being blown away from a blue' star in a rosette (nebula) ten light-years across; all the angels of antiquity could not have sounded more glorious.