Listen to Best Friend (Karaoke Version) [Originally Performed By 50 Cent & Olivia] online. Best Friend (Karaoke Version) [Originally Performed By 50 Cent & Olivia] is an English language song and is sung by Charlie & Mark. Best Friend (Karaoke Version) [Originally Performed By 50 Cent & Olivia], from the album Karaoke Mixpack, Vol. 23, was released in the year 2017. The duration of the song is 4:19. Download English songs online from JioSaavn.