The Endless Anthem

The lobby’s fluorescent lights had that tired, midweek flicker, but the building itself felt wrong - too still, like a held breath. Cora stood just inside the glass doors of the high-rise, keys still warm in her palm, and tried to ignore the vibration that had started an hour ago under her sternum. It wasn’t a sound yet. Not the way sound meant something you could point to. It was pressure without weight, a low tremor that made her molars ache and her fingertips tingle as if she’d pressed them to a speaker cone.

Then the Anthem found her.

It rose from the tile and the concrete seam lines where the lobby met the street-access corridor, threading through the floor with the intimacy of a pulse. A droning note - almost musical, almost language - stretched itself into harmonies that shifted when she tried to pin them down. The air didn’t hum. The air was fine. The ground was doing it.

Cora’s breath turned shallow. She hadn’t slept in a way she could count. She’d stopped keeping track days ago. Anchors didn’t need sleep the way other people did, but the Anthem still wore grooves into her attention, like it was learning where to scrape. Tonight it felt closer than usual, like it had crawled up through the building’s plumbing and settled behind her ribs.

Her neighbor downstairs - Mara, the one who always smelled like laundry detergent and cheap perfume - had left her door cracked when Cora came in, a sliver of warmth and television light. Cora could hear the show’s muffled dialogue, but beneath it the Anthem threaded itself, patient and relentless. The vibration under her skin deepened, matching something she couldn’t see: a rhythm that wasn’t hers and yet moved through her like it had always been in her blood.

“Hey,” Cora said, stepping into the lobby. The words came out too soft. The Anthem swallowed the edges.

A man in a windbreaker stood near the parcel lockers, staring at the wall as if he expected it to open. His phone was in his hand, screen lit, but he wasn’t looking at it. His eyes had that unfocused shine people got when they were too tired to blink.

Cora crossed to him. “Do you feel it? Like - like something’s under the floor?”

He flinched at the sound of her voice, not because she startled him, but because the Anthem had changed pitch between her syllables. The vibration shifted, and his throat bobbed. “What?” he asked, like she’d spoken another language.

“Nothing. Forget it.” She swallowed and forced herself to look at him properly. “Mara said you’re on the board for the building. The sensors - anything. Do you know if they’re doing renovations?”

He blinked hard. “Renovations?” His brows pinched. “No. Maintenance came by last week, that’s all.”

The Anthem rose another half-step. Cora felt it in her teeth again, a grind that made her tongue press to the roof of her mouth. It was becoming louder from ground and air at the same time, as if the building had turned into a tuning fork. She could almost hear it through the soles of her shoes.

“Okay,” she said, and her voice steadied because she needed it to. “I need you to come with me. To the street entrance. We need to look at the access panel.”

“Look at it?” The man’s gaze flicked toward the lobby’s sensor column - an off-white box mounted beside the directory. Its small indicator light blinked on and off with the usual boring rhythm of infrastructure.

Cora moved closer anyway, because staying still felt like agreeing with the Anthem. The vibration nudged her skin from the inside, as though her body was being tuned.

When she reached the sensor column, her fingertips hovered. The air around it was colder, a draft she hadn’t noticed before. The Anthem threaded through that cold like wire through cloth. She pressed her palm to the casing. Plastic and metal. Solid. Real.

Her bones disagreed. The vibration beneath her skin matched the sensor’s internal feedback channel, and for a moment the Anthem separated into something she could understand - not words, not exactly. Patterns. Ratios. A repeating structure that felt like a sentence written in pressure.

She jerked her hand back. The indicator light on the column flickered once, longer than it should have.

The man in the windbreaker swore under his breath. “What did you do?”

“I didn’t - ” Cora stared at the panel. “It’s responding.”

“That’s not possible.” He took a step back, then another, as if distance could make the sound less inside him. “It’s just a building system.”

Cora looked at his face and saw something new: his pupils were too wide, his mouth slightly open. The Anthem didn’t just get louder; it rearranged the way people perceived the world. She’d seen it happen to others. First they denied it. Then they started laughing at things that weren’t funny. Then they stopped recognizing their own names.

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