One of the biggest differences between the Yamaha Clavinova CLP-745 and its predecessor, the CLP-645, is the Grand Expression Modeling. Experienced pianists will surely notice improvements in the expressionism that can be found in the Yamaha Clavinova CLP-745. The slightest variations to touch will create a limitless range of sound to capture your musical individuality. This also helps to create a more realistic experience for new pianists exploring their musical abilities and expression. In add