Tracktion has introduced two expansion packs for Channel Robot’s cinematic virtual instrument Atmosia 3.
Alarm Semaphores delivers a selection of high-tension sounds inspired by alarms, warning signals, and the creeping sense of impending dread.
Built from piercing tones, distorted pulses, and anxious rhythmic patterns, each sound feels like a system pushed to failure—urgent, mechanical, and impossible to ignore. Ideal for sci-fi scoring, industrial music, horror, and trailer sound design, Alarm Semaphores communicates danger through sound, transforming alerts and sirens into cinematic signals that keep listeners on edge.
City of Keys is a versatile soundset inspired by the rhythm and emotion of urban life, centered on expressive piano-like keyboard tones that range from intimate and delicate to warped and cinematic.
Blending classic acoustic character with dissonant soundscapes, each sound captures the nuance of touch, space, and movement—perfect for songwriting, film scoring, lo-fi, pop, and electronic production. From almost-warm keys and moody nocturnal broken pianos to bright, cutting leads and alternative strings, City Of Keys turns every chord progression into a story unfolding across the skyline.
The expansions are on sale for $21 USD each for a limited time (regular $30 USD).
More information: Tracktion / Atmosia Expansions

