version only.
■ Single Player only.
■ Portrait mode only.
■ It is harder to perform accompaniment or play MIDI sound, drum sound or music than piano sound in some virtual piano softwares.
■ Performance is not perfect, even in real instruments.
Limitations within softwares.
■ Keyboard and mouse response rate occasionally become low/flat.
■ MIDI sound cannot be controlled due to the 50e0806aeb nemquee
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