Answer
The answer is Absolute concert music. Miklós Rózsa, celebrated for his film scores, maintained a lifelong commitment to composing absolute concert music, which embraces abstract musical forms such as symphonies, concertos, and chamber music, purely for the purpose of artistic expression, independent of any narrative or visual context. Rózsa found solace and fulfillment in this sphere of music, considering it the truest expression of his musical artistry.