Commercial recording has spent decades perfecting the art of the immediate hook, building arrangements that capture human attention within seconds and hold it there. Universal Music Group and audio wellness platform Sollos are now testing what happens when that dynamic is reversed. Timed around World Mental Health Day, the platform has released a batch of 151 re-engineered catalog tracks that strip out lead vocals, dramatically stretch run times, and embed specific frequencies intended to quiet the mind rather than stimulate it.
Covering more than eight hours of sound, the collection divides recordings from artists like Olivia Dean, Sam Smith, Jon Batiste, Shawn Mendes, Niall Horan, and Chad Lawson into three functional categories: Focus, Relax, and Sleep. While ambient streaming edits and sleep soundscapes have been widespread for years, Sollos applies a technical process directly to the source recordings. The company evaluates the harmonic structure and tempo of each master, then uses its patented Auditory Beats Generator to weave auditory beats into the original instrumentation.
Each category targets a particular cognitive state through these frequencies. Selections filed under Focus incorporate gamma beats, which aim to encourage active mental alertness. The Relax collection uses theta beats to foster calmer, contemplative listening. Tracks built for Sleep rely on delta beats, the slow patterns associated with deep physical rest. Sollos emphasizes that this audio restructuring was not done without artist permission. The company states that every piece was selected and rebuilt with direct participation and final approval from the original performers and songwriters.
Examining the tracklist shows just how drastically familiar material has been pulled apart. Olivia Dean provides a 16-track instrumental Relax collection, which includes ten wordless versions drawn from The Art of Loving. Sam Smith contributes instrumental offerings split across the Focus and Relax brackets. Other entries abandon traditional song structures altogether in favor of long, continuous sessions. Jon Batiste delivers an exclusive 30-minute meditation take on "Always Know," adapted from Monk Meditations. Classical pianist Chad Lawson turns his album hush into an uninterrupted 90-minute Sleep version designed to play through the night.
Standard pop singles receive similar long-form transformations. Shawn Mendes has an entirely lyric-free version of "Wonder," created straight from the original multi-track stems and extended to an hour in a Sollos Sleep Mix. Niall Horan's single "The Show" undergoes an identical hour-long conversion through the Bettina Bergström Sollos Sleep Mix. In both instances, the vocal melodies that once drove radio rotations are removed entirely. The remaining musical textures run on loop, keeping the brain from latching onto conversational lyrics or predictable chorus payoffs.
Access to the re-engineered music is tied directly into Apple Music, where the material is featured across the service's Sound Therapy shelf and on Apple Fitness+. In tandem with that streaming release, Sollos has rolled out a dedicated iOS app across the United States and the United Kingdom. The mobile app itself is free to download, though playing music through it requires an active Apple Music account or trial. Once inside, users encounter mood-tracking prompts before and after each listening session, allowing the app to log which specific arrangements produce the most noticeable shifts in how they feel.
With more than 250 artists across pop, soul, classical, electronic, and R&B already attached to the initiative, the drop illustrates how major music companies are treating their vast tape vaults as practical utilities. For audiences who already know these melodies by heart, hearing them dismantled into hour-long frequency washes offers a very different kind of relationship with the music, trading emotional resonance for functional quiet.
