Quran for focus
Long Quran recitation for working, studying and concentrating, with continuous playback and a reciter chosen for a measured, non-distracting pace.
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For concentrating while working, the recitation that helps is sustained, measured and without a dramatic delivery. A murattal recitation at an even pace gives you a rhythm without demanding attention, which is the opposite of a mujawwad performance that pulls you out of what you are doing every thirty seconds.
Practically: pick a reciter with an even tempo, start a long surah or a juz, and let it run. Al-Baqarah is about two hours; a full juz is roughly 45 to 60 minutes. Continuous playback across a whole juz means you are not touching the phone every few minutes, which is the actual enemy of focus.
A caveat worth stating: this is not the same as listening attentively, and it should not replace the listening that is worship. Using recitation as a working background is a choice many people make; do not let it become the only way you ever hear the Quran.
What to recite
The setup that works
One long surah, one reciter, no autoplay to something loud. If you need silence for a call, pause rather than switching to music, and resume where you stopped.
Questions
Is listening to the Quran while working allowed?
Yes. Hearing recitation while doing something else is not prohibited. What is discouraged is treating it with complete inattention or using it where it competes with something that requires your full attention, like a meeting.
Which reciter is best for background listening?
One with an even, measured pace rather than a dramatic one. Mishary Alafasy and Abdul Basit in murattal are both commonly used for this; the mujawwad style is more expressive and more distracting.
How long should the session be?
Long enough to cover your working block. A juz runs about 45 to 60 minutes; a long surah between 25 minutes and two hours. Set it once and let it run instead of choosing repeatedly.