Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Hand Roll Piano not a good midi device for electronic Musicians

The timing on using the roll up piano as a the midi controller was a joke. The response time was so slow, there was a full second between pressing the key and hearing the note inside of Cubase and Sonar.You also could not turn off the internal sounds of the rollup piano. I had to plug in headphones just to shut of the sounds to hear my VST plugin patch.