Opera singer David Daniels and his husband plead guilty to sexual assault

David Daniels admitted sexually assaulting another singer in Houston (AP)

A renowned US opera singer and his husband have pleaded guilty to sexually assaulting another singer in Houston, Texas.

Countertenor David Daniels, 57, of Ann Arbor, Michigan, and Scott Walters, 40, entered the pleas on Friday after a jury was assembled for the trial of the pair on first-degree felony charges of aggravated sexual assault.