Answer
The answer is Valentin Serov. Valentin Serov was a renowned Russian painter known for his unique and emotive style. In 1898, he created a striking portrait of the esteemed composer Nikolai Rimsky-Korsakov, capturing the musician's essence with remarkable precision. Serov's masterful brushstrokes and vibrant colors brought Rimsky-Korsakov's personality to life, making it one of the artist's most celebrated works and an iconic representation of the composer.