Listen to Only One U (Karaoke Version) [Originally Performed By Fantasia] online. Only One U (Karaoke Version) [Originally Performed By Fantasia] is an English language song and is sung by Ellen Lang. Only One U (Karaoke Version) [Originally Performed By Fantasia], from the album Karaoke Party Mix, Vol. 1, was released in the year 2017. The duration of the song is 3:57. Download English songs online from JioSaavn.