In summary, we have investigated the intensity of Raman scattering in In1-xGaxN thin films when their bandgap energy is close to the excitation frequency of the laser. We found that tuning of electronic bandgap transition of the films with the laser excitation frequency dramatically influences the scattering intensities of A1(LO), 2A1(LO) , E2(Low) and, E2(high) modes.