1. Hear a reference note
Play a short A4 reference tone. This tests the sound path and speakers by ear—not automatic speaker detection.
No sound played yet.
Ready for your first three notes?
Hear a short pattern, follow the highlighted keys, then try it yourself. No instrument connection or previous experience is required.
Start here · about one minute
No scores or level changes
Can you find three notes?
Watch the keys, hear C–D–E, and then try the pattern. You can use the on-screen keyboard right away, or optionally check a MIDI input.
Follow the keyboard
The white C key is immediately to the left of the group of two black keys.
Listen, then try
Next note: C4 (1 of three)
No MIDI input tested.
Advanced checks: microphone, MIDI details, offline files, and manual verification
A browser capability shown as available does not verify physical hardware. Microphone and MIDI permissions are requested only when you choose to run their tests. This page does not upload or save your note events.
Browser overview
What this browser can provide
Try your learning equipment
2. Check microphone input
Choose Start to request microphone permission. A local sound-level meter will respond to live input. No recording file is made.
Input level: not tested
Microphone is off.
2a. Hear, try, and detect a musical note
Choose a note, hear the reference, then play or sing a steady single note into your microphone. First start the microphone test above and allow permission. Use headphones to reduce speaker-to-microphone feedback. A pitch match does not verify where the sound originated.
No pitch measured. Start the microphone test first.
3. Detect a MIDI instrument
If this browser supports Web MIDI, request access to connected MIDI inputs. The device can send note events to this page; no notes are saved.
MIDI hardware has not been checked.
No MIDI notes received.
4. Try touch or keyboard activation
Use your finger on a touchscreen, or focus this button and press Enter or Space. This checks interaction, not screen calibration.
No activation yet.
5. Check offline learning files
Inspect the installed app cache without disconnecting your network. A real offline test must still be completed on the intended device.
Cache not yet inspected.
Real-device verification checklist
This checklist is for manual evaluation. Checking an item only records a choice on this page; it does not certify the equipment or send results anywhere.
This prototype remains local-only. These checks do not validate production accounts, payments, secure cloud synchronization, or instructional accuracy across all instruments.
Your device verification record
Mark only checks you actually performed. These are your observations, not automated certification or a claim that Plain Music has tested equipment remotely.
Verification notes stay in this browser unless you export them. They are not part of the learner-history backup and do not change scores or achievements.