Like demos of GEM PS1500?0 x -10 x +10Current Score:0 ; Total votes:0
Finish the captcha below to submit your vote.
How to:
Press the PLAY button, the captcha will generate four random pitches and play them. Listen to these notes, input the pitch of each note.
Result in fixed Do like [ABCD], [abcd] or movable Do like [1234] are all valid.
The note image is only four reference (which means the image could be wrong), please take the sound into high-priority account.
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