Watch this student and opera singer unexpectedly come together for a powerful duet

Madisen Hallberg was being filmed singing the national anthem on campus for her university's virtual graduation last month when she heard the beautiful voice of a stranger suddenly start singing along.   Emmanuel Henreid heard Hallberg's song through the trees while he was walking on the leafy campus of Portland State University in Oregon when the classically-trained opera singer decided to join in for an impromptu duet.   Watch the beautiful moment that happened next by following the link below.  Watch Now Get the TODAY Mobile App Follow TODAY Privacy Unsubscribe