Konstantin Konstantinovich Saradzhev (Russian: Константи́н Константи́нович Сара́джев) (1900–1942) was a Russian bell ringer, composer, and musical theorist. The son of the conductor and violinist Konstantin Saradzhev, K.K. ("Kotik") Saradzhev was strongly affected by hearing a powerful church bell at the age of seven and became a musician specializing in bells (though he also played the piano). He was known for "his superhuman aural acuity: between two adjacent whole tones, he perceived not just one half tone but a half tone flanked on either side by a hundred and twenty-one flats and a hundred and twenty-one sharps" and "could distinguish all four thousand of Moscow's church bells" by their unique frequencies. He composed "bell symphonies" making use of the microtonal complexities of Russ