Bilateral music: definition and how to use it
Bilateral music is music engineered so the sound shifts back and forth between your left and right ears in a steady rhythm, meant to be heard through headphones. It’s a form of auditory bilateral stimulation (BLS), the same left-right principle EMDR therapists use with tones, taps, and eye movements to help settle a distressing memory or feeling.
How is bilateral music made?
Someone takes an existing track, often calm and instrumental, and edits it so the sound pans fully from the left channel to the right and back at a slow, steady pace. Through headphones, each ear takes a turn as the louder side. Play the same file through phone or laptop speakers instead, and the two channels blend together, so the alternating effect disappears.
Don’t confuse it with two similar-sounding techniques. “Biolateral” music uses the same panning method and is associated with Brainspotting, a different modality from EMDR. Binaural beats are different again: two steady tones at slightly different frequencies, one per ear, that your brain perceives as a single pulsing beat rather than a moving one. Bilateral music is defined by the back-and-forth movement itself.
Does bilateral music work the way EMDR tones do?
The EMDR International Association lists auditory tones as one of three official BLS channels, alongside eye movements and taps. Bilateral music is a musical variation on that same channel, not a separately studied technique of its own. So most of the evidence behind it is really evidence for auditory BLS in general.
The leading explanation for why alternating stimulation helps is a working-memory account: holding a memory in mind while tracking a rhythm splits limited attention, so the memory tends to feel less vivid and less charged. Researchers van den Hout and Engelhard tested this against competing theories in a 2012 review and found it held up best.
A small 2023 feasibility study added personalized music to standard EMDR sessions for 12 people with trauma histories and found it safe and well tolerated, reaching target outcomes in 8.5 sessions on average. That’s an encouraging early signal, not proof that a standalone bilateral-music track works as well as full EMDR. Research directly comparing eye movements, tapping, and other BLS types is still thin.
How do you use bilateral music yourself?
Put on headphones, choose a slow, panned track, and hold a mildly stressful thought in mind while you listen, the way you would with self-guided bilateral stimulation more generally. Notice whether the feeling softens after a minute or two. Plenty of people also use it simply to wind down before sleep, with no memory work involved at all.
If finding or building the right track feels like a hurdle, EmEase, a self-guided EMDR app, offers that same left-right principle through built-in visual and audio bilateral stimulation with adjustable pacing at app.emease.com. For anything heavier than everyday stress, a trained EMDR therapist remains the safer route.
Frequently asked questions
Is bilateral music the same thing as EMDR?
No. EMDR is a structured eight-phase therapy delivered by a trained clinician. Bilateral music is one way to create the alternating left-right pattern that EMDR uses, called bilateral stimulation, but listening to a track on your own is a wellness practice, not therapy.
Is bilateral music the same as binaural beats?
No. Bilateral music pans fully between your left and right ears, like sound swinging back and forth. Binaural beats plays two steady tones of slightly different frequencies, one per ear, that your brain perceives as a single pulsing beat. They're different techniques with different mechanisms.
Do you need headphones for bilateral music to work?
Yes. The alternating effect depends on each ear receiving a separate channel. Phone or laptop speakers blend both channels into one, so the left-right movement, and the point of the exercise, disappears. Stereo headphones or earbuds are necessary.
Can you make bilateral music yourself?
Yes. Audio-editing tools that support stereo panning let you shift any calm, instrumental track between your left and right channels at a slow, steady pace. Several apps and websites automate this for you.
Can bilateral music process trauma on its own?
No. It can ease everyday tension the same way other forms of bilateral stimulation do, but reprocessing traumatic memories is the work of full EMDR therapy with a trained professional, not something a music track alone is built to do.
Sources
- The Eight Phases of EMDR Therapy — EMDR International Association (2021)
- How does EMDR work? — Journal of Experimental Psychopathology (2012)
- Auditory Personalization of EMDR Treatment to Relieve Trauma Effects: A Feasibility Study — Brain Sciences (2023)