How to practice
Listen for whether the C note sounds lower, centered, or higher, then click C3, C4, or C5.
PianoKeys Wiki
Live drill
Press Start to hear the first question.
Start the drill, listen to the note, then choose the matching key.
Press Start to enable audio and hear the first question.
Listen for whether the C note sounds lower, centered, or higher, then click C3, C4, or C5.
Use C4 as your reference point. It is commonly called Middle C.
Only C3, C4, and C5 are valid answers here, so the exercise focuses on octave distance.