Attempt to calculate the sound!
Please answer the keyboard under formula ♪ will be questions on the blackboard, the sound becomes.
For example, a problem
♪(C) + ♪(D)
If the answer is to select the (C/D) since the keyboard (C/D) is the answer.
Attempt to calculate the sound!
Please answer the keyboard under formula ♪ will be questions on the blackboard, the sound becomes.
For example, a problem
♪(C) + ♪(D)
If the answer is to select the (C/D) since the keyboard (C/D) is the answer.