The CTK-240 is the ideal starter instrument for all beginners. The CTK-240 comes with 49 standard keys (four octaves) and is perfect for combining fun with serious learning. 100 tones, 100 rhythms and 50 songs all lend themselves to instructive music lessons. Where the music is! Even the design of the CTK model is extremely impressive – in its slim, slender and black casing - it is a beautifully portable piece of technology.