How Rooftop Cipher works

You do not need to know any music theory. Pick a sound from the tray and give it to a performer, and that performer starts playing it in time with everyone else. Add a kick, then a bass, then a melody, and the track builds up as you go.

Rooftop Cipher is built around hip-hop sounds: a sparse tension beat with a huge dry kick, swung hats and a rim-clap, round filtered bass, eerie synth plucks, breathy chord pulses and an original synthetic cipher call. Try a sound with each performer and listen to what it changes.

Each level hides a set of 6 sounds that unlock the full song. A meter shows how close you are, and if you get stuck, one of the missing sounds starts to glow. When you like your mix, press Share to copy a link that replays it exactly. Whoever opens it can remix it.

Some of the sounds you will find

24 sounds in this level. Here are six of them.

Cornerbite CapA notched mango cap playing a sparse tension beat with a huge dry kick.
Pocket-Pad VestA quilted strike-pad vest dropping a hard kick, rim-clap and swung hats.
Understep SatchelA crossbody speaker satchel playing a round, tightly filtered drop bass.
Sunkey LensesAsymmetric square lenses playing a sparse, eerie synth-pluck response.
Reedtile MaskA hinged reed-tile mask playing breathy chord pulses.
Here-Now BadgeAn enamel breath badge playing an original synthetic cipher call.

Free, and nothing to sign up for

Bopdeck has no accounts and no ads. It runs in Chrome, Edge, Firefox and Safari, on Chromebooks, phones and tablets. Teachers can read the classroom guide.

Try another style

Island Pulse: dancehall meets Afrobeats at 102 BPM.
Court Bounce: Jersey club at 128 BPM.