How to keep your loops in time

Updated 2026-08-09

The single most important rule: your first recording sets the loop length, and every layer after it inherits that length. If the first take drifts, everything drifts with it, and no amount of care on layer three will rescue it. Re-record the first loop rather than fighting the ones on top.

Diagnose it before you fix it

Loops go out of time in four distinct ways, and they need opposite fixes. Work out which one you have before changing anything.

• The loop is the wrong length. Every repeat lands early or late by the same amount. The base loop is the problem.
• One layer sits consistently late. The loop is fine; this is latency, and it is not your playing.
• One layer is sloppy but the rest are fine. That one is you. Re-record it.
• Everything gradually falls apart. Usually the base take had no clear pulse to begin with.

Want to try this on your iPhone? Jam Looper is free to download, with four tracks free. Get it on the App Store

The latency problem, and why it is not your fault

Sound takes time to travel from the microphone, through the phone, and back to your ears. If you are monitoring on headphones you hear the loop slightly after it actually plays, so you play slightly late to match — and your recording lands late.

Jam Looper has two offsets in Settings for exactly this: "Playback latency" and a separate "Bluetooth latency". Set the one that matches how you are listening, once, and it stays. If every layer you record sits consistently behind the beat by the same amount, this is the setting to reach for — not more practice.

Wired beats wireless, by a lot

Bluetooth headphones add tens to hundreds of milliseconds of delay, and the amount varies by device and even by connection. AirPods are convenient and, for layering, the single most common cause of loops that will not sit right.

If your layers are drifting and you are on Bluetooth, try wired headphones before you change anything else. It is the highest-yield thing on this page.

Give the first take a spine

Jam Looper takes the loop length from your first recording. There is a metronome with tap tempo and time signatures from 2/4 to 7/8 if you want a click to play against — but nothing quantises a take afterwards, so the click helps you play in time rather than fixing it for you.

That cuts both ways. Ignore the metronome and you are free of the grid entirely, so odd bar lengths and rubato phrases work fine. Use it and you get a reference, but the first take still has to mean it. Either way, play something with an obvious pulse — a strummed chord pattern rather than an ambient swell — even if you throw it away later.