Kelly also allegedly filmed the two youths in sexual encounters with other people, including some of Kelly’s girlfriends, according to the filing.

Prosecutors wrote that the accounts of the boys and others would help show that the actual charges “were not isolated events and were part of a larger pattern.”

Jury selection is due to start next month in a New York federal court for Kelly, who denies ever abusing anyone.

The multi-platinum-selling singer, born Robert Sylvester Kelly, is known for work including the 1996 hit I Believe I Can Fly and the cult classic Trapped in the Closet, a multi-part tale of sexual betrayal and intrigue.

Kelly’s sex life has drawn scrutiny since the 1990s, and he currently is also facing sex-related charges in Illinois and Minnesota.

He has pleaded not guilty.