Generally any form of music is composed with a mix of straight notes and bends. In particular, Carnatic music has a lot of bends and gamakas. To handle these bends, there is a facility available in most of the keyboards called the 'Pitch bend' wheel. In advanced keyboards like Korg, Rolland etc, the quality of the pitch bend wheel is high, and the range of the pitch bend can also be altered. But in normal keyboards like Casio CTK series, Ymaha PSR series, the quality of the pitch bend wheel is low, and we have to handle it very gently. Anyway. we can use the pitch bend wheel to produce bends.
In the videos below, I have explained the use of pitch bend wheel.
