Korpa 
The Casio WK200 Electronic Keyboard offers great tones, sampling, and lessons in one great keyboard! This WK200 is amazing! Casio is showing how much they can fit in to this keyboard while offering at a price that makes it impossible to turn down.
The New AHL* sound source (*Acoustic & Highly-compressed Large-waveform)
All built-in tones, including piano and acoustic instrument tones, now sound better than ever before! 48-tone maximum polyphony provides plenty of margin to minimize the chance of notes being dropped when tones are layered and when playing with Auto Accompaniment.
Sampling function
Sample a sound and you can play it on the keyboard! You can create sound effects for a party or other events, or use sounds to compose music. Sample sound from an audio device plugged into the Audio In jack or from a microphone plugged into the microphone jack!
Touch Response
Touch Response let's you add delicate nuances to notes by varying how much pressure you apply to keyboard keys.
Music Challenge
Test your response with an exercise that is just like playing a game! Music Challenge tests your reaction speed by requiring you to press the keys indicated by the on-screen keyboard guide in time with the Auto Accompaniment tempo using the correct fingers indicated by the on-screen fingering guide.
Step Up Lessons
Pieces are divided into short, easy-to-master phrases making it easy for just about anyone to learn to play. After you master a phrase you advance to the next one. With this new lesson function, you keep building up your collection of mastered phrases and soon you are able to play the entire song.
Scoring system
Your lesson score appears on the display screen.
Voice Fingering Guide
If the keyboard senses you are having problems, it will help you by calling out finger numbers in a simulated human voice.
152 Song Bank tunes Including 50 Exercise phrases
Built-in songs cover a wide range of genres for lesson play and for your listening enjoyment. Includes Exercise phrases!
Song Expansion
You can load songs from external sources and use them for listening, play along, or even lessons. 320 KB memory capacity, which is enough for up to 10 songs. Note that the actual number of songs that can be stored depends on the size of each individual song and other data stored in memory.
