How to make a cappella music on your phone

Updated 2026-09-02

An a cappella arrangement is four jobs: a bass line, a chord pad, percussion and a lead. Record them as separate layers with a looper and your phone becomes the whole group. Four layers is genuinely enough — the well-known a cappella groups are mostly five people doing exactly these jobs.

First, the confusing bit about the word

Searching for a cappella apps turns up two completely different things. One kind makes video grids where you appear several times on screen singing with yourself. The other kind records audio layers and stacks them into an arrangement.

This guide is about the second. Jam Looper records audio only — there is no video, no split-screen grid, and nothing to post directly as a video. If the multi-camera look is what you are after, this is the wrong tool and it is better to say so now.

The four parts, in recording order

1. Bass. Sung low, on the root of each chord, usually on a soft "dum" or "bm". Record it first — it sets the loop length and everything else tunes to it.
2. Chords. Two or three sustained parts on "ooh" or "ah". Record each one separately; that separation is what makes it sound like several singers rather than one person being loud.
3. Percussion. Kick, snare and hats with your mouth. There is a full guide to beatbox layering if this is the part you want to push.
4. Lead. Last, over everything, once you can already hear the arrangement underneath you.

How many layers you actually need

Four covers bass, one chord part, percussion and lead — a complete arrangement, and exactly what 4 free tracks gives you. Going to 8 with Pro buys you a second and third chord voice, which is where it starts sounding like a group rather than a solo trick.

More layers is not automatically better. Every additional part captures the room again, and by the sixth pass you are hearing your kitchen six times over. Adding one strong part beats adding three tentative ones.

Keeping it clean

• Same distance, same position, every layer. Moving between takes changes the tone and the stack stops sounding like one voice.
• Sing the low parts further from the phone. Low notes carry more air and overload the microphone at close range.
• Keep effects off the chord parts. Jam Looper has per-track reverb, delay, distortion, tremolo, pan, pitch shift, low pass, high pass and resonance, but reverb on every layer is the fastest way to turn a stack into a wash. Reverb on the lead only, everything else dry.
• Record in a soft room. A room with a rug and curtains does more for a vocal stack than any setting in any app.

Sharing what you made

Jam Looper exports .mp3, .m4a, .wav and .caf, and it can also publish a jam as its own web page with artwork generated from the sound, which you can send to anyone without them installing anything. There is more on that in how to share a loop online.