SecretKeys.
A key to the secret.
Native: play your piano normally · Enhanced: explore more sounds and MIDI features
Extra play options
Octave
Arpeggiator Off
Drum pads
GM percussion · channel 10 by default. Drum sounds depend on your piano.
Tap to play. Choose Arrange pads to swap two positions, or Edit pads to change a sound.
12 factory presets · 116 user slots
Editing presets · choose a slot to edit, or use Save sound to store your current sound
Sounds 1–128 · browse and save
12 factory presets · user slots 13–128
Tweak your sound
Defaults are app settings; the piano cannot report its original effect values.
Layer off · connect your MIDI piano first.
Gate · advanced
Gate · advanced
Classic keeps the original arp patterns and timing.
MIDI connection
Keys and sound engine
Two sounds, one keyboard
Saved splits
Save up to 12 named setups, including both arpeggiators. MIDI ports stay device-specific.
Split arpeggiators · optional
Choose an arp for either hand, then enable Split. T = triplet · Hold keeps your pattern playing.
Advanced · channels, programs & octaves
Left · lower keys
Right · upper keys
Choose a Left and Right sound, set the split point, then enable split. Local Off and MIDI Echo are set automatically.
Piano compatibility test
Results on this device
Install & update
Open the app online in Chrome once and wait for “Offline ready”. Then install using the button or Chrome menu ⋮. Your presets remain saved locally.
MIDI monitor
A little guidance
Connect
Use a USB data cable. At startup choose Connect MIDI in the connection window, or close it to explore. MIDI settings remain available. A single connected output is selected automatically.
Play
Choose a preset and play your piano. The piano makes the sound; SecretKeys sends MIDI.
Create
Browse GM or Extra sounds, choose Save sound, name it and select a free slot from 13–128. Export a backup to keep a copy.
Explore
In The Lab, combine sounds, set keyboard zones, experiment with left and right hand patterns, and shape FX. Piano test checks which MIDI commands your instrument supports.
DDP modes
DDP Series Native returns to ordinary piano playing. DDP Series Enhanced restores MIDI Echo and extra sounds. Choosing a preset from Native switches back to Enhanced.
Need a hint?
Page help gives a short guide to the tab you are viewing. Full screen keeps the controls together.
New in 1.35.55
Classic and Discovery name the two sound collections. The compact display and collection arrows align with F–G. Save sound is the single preset storage action. Octave and Arpeggiator have matching expandable rows.
SECRETKEYS / Independent Controller for Donner DDP Series · v1.35.55