Problem: Many streaming “shuffle” modes repeat the same subset of songs and skip the rest—especially in big playlists.

True shuffle for every playlist.
Every song—no annoying repeats.

true-shuffle makes sure your playlist actually plays through: no skipped tracks and no repeats—like the good old MP3 player shuffle, but with your streaming service.

▶ Join the waitlist See the data

Kid-easy: pick a playlist → hit shuffle → enjoy.

Numbers don't lie

What "normal" streaming shuffle actually does — and why that's a problem.

552

songs you never hear in a 1,500-song playlist

After a full session with standard shuffle (1,500 plays), statistically only 948 of 1,500 songs are played — 552 remain unheard.

≈46

plays until the first repeat

Statistical expectation for a 1,500-song playlist (birthday paradox, 50% probability) — after that, a song repeats before all others have played once.

repeats — every song plays exactly once

true-shuffle uses the Fisher-Yates algorithm: mathematically guaranteed full coverage, no matter how large the playlist.

Share of songs heard per listening session — 1,500-song playlist

0 %25 %50 %75 %100 %

after 300
plays

18 %272 songs

20 %300 songs

after 500
plays

28 %425 songs

33 %500 songs

after 750
plays

39 %590 songs

50 %750 songs

after 1,000
plays

49 %730 songs

67 %1,000 songs

after 1,500
plays

63 %948 songs

100 %1,500 songs

Standard shuffle true-shuffle (Fisher-Yates)

Data basis: Coupon collector's problem (probability theory). Formula: E[unique songs] = N·(1−((N−1)/N)^k), N=1,500. Spotify publicly confirmed in their 2014 Engineering Blog that the original shuffle algorithm was replaced by a weighted approach designed to feel "more random" to users — which in practice skips even more songs than the theoretical baseline shown above. Source: Spotify Engineering Blog (2014), "How to shuffle songs".

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FAQ

Short & clear.

Why does shuffle often feel “bad”?

Some services tailor shuffle to your listening behavior (e.g., Smart Shuffle or fewer repeats). Also, truly random playback can feel “wrong” because randomness naturally clusters. Learn more: Spotify: Shuffle/Smart Shuffle, Spotify: Smart Shuffle.

What does true-shuffle do differently?

true-shuffle generates a no-repeat order: every track exactly once per run. We’re also planning personalization options like priorities and shuffle profiles.

Does it work for huge playlists?

Yes. The goal is to load large playlists efficiently (paging) and play them through—no skips, no repeats.

Do I have to leave my streaming service?

No. You stay with your service. Later, true-shuffle connects via app login and controls shuffle/playback via the service API.

What happens to my data?

For the waitlist we store name and email to notify you. Reviews are stored and briefly checked before display. Details are in the privacy policy.

Can I prioritize tracks?

Planned: you’ll be able to tweak shuffle (priorities, moods, “more of this today”). Beta feedback will shape what ships first.