Listen to Ek Din Aap (From "Yes Boss") online. Ek Din Aap (From "Yes Boss") is a Hindi language song and is sung by Kumar Sanu and Alka Yagnik. Ek Din Aap (From "Yes Boss"), from the album Unforgettable Bollywood Love Songs, Vol. 3, was released in the year 2016. The duration of the song is 4:26. Download Hindi songs online from JioSaavn.