Marsha Ambrosius, a collaborator on Justin Timberlake's 'Cry Me a River' said that some fans may be surprised to learn about her contributions to the 2002 single — including memorable falsetto moments and the outro.

On Thursday, Ambrosius sat for an interview on The TERRELL Show, where she explained that the person singing the falsetto and the outro was her and not Timberlake, as many initially believed. Ambrosius proved it by singing the "Cry me, cry me" ad-lib at the end of the song.

Marsha Ambrosius, who is credited for her background vocals on the track, said that fans are sometimes surprised one "part was actually me" Some fans' favorite part of Justin Timberlake's "Cry Me a River" may not have been sung by the pop star — but rather by a collaborator on the track.