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Deep Focus
Deep Focus is a soft, low-passed chord pad, an E flat stack that starts at 77 Hz and tops out near 590 Hz, with little left above 2 kHz. The left channel carries the bass and the right carries the mids, so it spreads unevenly. Named for what people play it during, not for anything it does.
Ready to play
Stack this under rain or a fire, keep the blend, and play it with your screen off. Slo, on iOS, Android and Mac.
What the loop actually contains
Measured tone by tone, the file holds a sustained chord: 77.5 Hz at the bottom, then 116, 155, 196, 233, 294, 349, 392, 440, 467, 524 and 588 Hz. That is an E flat stack with its fifths and thirds filled in. The top falls away steeply, with the 2 to 4 kHz band some 47 decibels down, and that steep fall gives the pad its muted, cushioned quality. The channels do not match: the 77 Hz bass dominates the left, while the 233 Hz mid dominates the right.
A note on the name, and what to pair it with
The name describes the situation people reach for it in. It is not a claim about concentration, and nothing on this site supports one. What can be said is what the recording is: a quiet, unchanging, wordless chord with no rhythm and no events to catch the ear. Whether that suits your work is a question only trying it answers.
Nearby options: Flow is a plainer stack of octaves, Cosmic Drift is darker still, and Lullaby is the same idea in F major with far more bass. See them all on the sound library index, or open the Deep Focus and rain blend in the free sound mixer to put some movement over the top.
Frequently asked questions
Does Deep Focus improve concentration?
Nothing supports a claim of that kind, and this page does not make one. Its title reflects how people commonly use the track, not a measured effect. Play it if you like how it sounds.
What chord is it?
An E flat stack. The measured pitches run 77, 116, 155, 196, 233, 294, 349, 392, 440, 467, 524 and 588 Hz.
Why does it sound lopsided in headphones?
The channels do not match. The low 77 Hz tone dominates the left and the 233 Hz mid dominates the right, so the balance shifts with whichever pitch you notice.
Is there a sleep timer?
Yes. Set the browser player to stop after 15, 30, or 60 minutes, or leave the timer off for continuous playback.