Charles K. Géczy was born in Mezőladány, Hungary. After graduating from high school in Debrecen, he studied String Bass at the local music school, and sang in the chorus of the Csokonai Theatre. In 1950 he joined the Hajdú-Bihari Folk Ensemble under the leadership of Lajos Czövek. In 1956 he was admitted to Zoltán Tibay's class at the Liszt Ferenc Academy of Music. After the Hungarian Uprising of 1956 he left the country and continued his studies at Juilliard School, where he earned an Artist's Diploma in 1962. For his Master of Music degree in Minnesota he wrote a theses entitled "Ethnic influences in Béla Bartók's Cantata Profana". A second Master's Degree in Library Science followed at Columbia University. In 1989 he earned his Ph.D. at N.Y.U.

He played String Bass in several major American symphony orchestras and at music festivals – New Orleans, Kansas City, American Ballet Theatre, Bar Harbor Prince Edward Island Festival (Canada), International Music Camp, etc. – and taught String Bass and Music Appreciation at Mankato State College. He also wrote music reviews and articles for the Mankato State Reporter, American String Teacher, Columbia Spectator, Irodalmi Újság and the NAP, a Hungarian weekly publication in Pozsony.

For the last 25 years he has been associated with the New York Harp Ensemble. He played String Bass for one Christmas recording and collaborated as an annotator on several LP-s and CD-s. At present he is writing a book entitled "Kék-nefeljts; the history of the Serly family".