Fifty-eight-year-old Jose Sanchez of Monroe Township is accused of viewing and sharing child pornography.
Investigators say Sanchez worked as a music instructor and provided lessons to children in a private studio in West Windsor.
The investigation began in September 2022.
Authorities say they seized Sanchez's electronic devices on October 7 before his arrest.
He is being charged with third-degree possession of child pornography and second-degree file sharing of child pornography.
Second-degree crimes carry a sentence of five to 10 years in state prison and a fine of up to $150,000. Third-degree crimes carry a sentence of three to five years in state prison and a fine of up to $15,000.