 " Say Yes " was leaked onto the Internet on May 21 , 2014 . Williams revealed on her Twitter account the same day that the leaked track was an unmixed and unmastered version of " Say Yes " . In an interview with The Hollywood Reporter , she said that she " hated " the fact that an unfinished version was released although noted that she was not angry and felt " overwhelmed " by the positive support . Prior to the song 's debut , several publications reported that Beyoncé 's sister , Solange Knowles , also appeared as a featured artist in " Say Yes " ; however , the claims were later proved to be wrong . A final official version of the song premiered on June 2 , 2014 and was released to radio and made available for digital download the same day . On the German web show MalcolmMusic , Williams performed a German version of the song with host and journalist Malcolm Ohanwe . 
