Listen to Gotta Knock a Little Harder (Live) [feat. Douglas Unger] online. Gotta Knock a Little Harder (Live) [feat. Douglas Unger] is an Unknown language song and is sung by Platina Jazz. Gotta Knock a Little Harder (Live) [feat. Douglas Unger], from the album Tokyo Express - Live In Concert, was released in the year 2014. The duration of the song is 7:17. Download Unknown songs online from JioSaavn.