Independent journalism on sound, waves and healing · updated daily

Wednesday, October 28, 2026 · The Sunday letter

Universal and Apple release 151 pop songs with beats mixed underneath

Universal’s Sollos unit embeds gamma, theta and delta beats under Sam Smith, Olivia Dean and others for World Mental Health Day; the evidence is the company’s own trial.

Abstract wave illustration for: Universal and Apple release 151 pop songs with beats mixed underneath

The short version

  • Universal Music Group and Apple Music launched “Pop Therapy,” 151 chart tracks with monaural beats embedded, on October 8.
  • The supporting trial is company-authored, one 30-minute session, 308 people, and found the music-plus-beats worked while beats alone did not.
  • The 91.9% “felt calmer” figure is a 140-person satisfaction survey, not a clinical result.

Universal Music Group and Apple Music released “Pop Therapy” on October 8, two days ahead of World Mental Health Day: 151 tracks, more than 8 hours, from Olivia Dean, Sam Smith, Shawn Mendes, Niall Horan, Jon Batiste, Chad Lawson and others, each with a monaural beat mixed underneath. The catalog sits under “Sound Therapy” on Apple Music and in a free Sollos iOS app in the UK and US, with the first month free for linked Apple Music accounts. There are three beat settings: gamma for focus, theta for relaxation, delta for sleep. Sollos is UMG’s audio-wellness unit, and Digital Music News reports more than 250 UMG artists have signed on.

The evidence behind it is a company-authored trial in Frontiers in Psychology (2025; Venkatesan, Demetriou, Koops, Bowling): 308 people, one 30-minute session, non-clinical. Music with embedded beats reduced anxiety (d = −0.58) and lifted mood (d = 0.48) against a pure-tone control. Beats alone did not reduce anxiety. The 91.9% who “felt calmer” come from a separate 140-person UK user survey, which measures satisfaction, not symptoms.

Read plainly, the trial says the music did the work and the beats did not add a measurable anxiolytic effect on their own.

Audient reports on research and practice; it is not medical advice. Sound-based practices are generally low-risk, but people with epilepsy, implanted devices, hearing conditions or a history of trauma should check with a clinician first.

The Audient letter

One good read about sound, every week.

The research that held up, the practice worth trying, the place worth hearing — in one short email on Sunday evening. No hype, no supplements, unsubscribe in one click.

Weekly. Free. Your address is used for this letter and nothing else.

New here? Start with the basicsThe physics and the physiology, plainly

All explainers →