Listen to Rock-A-Hula-Luau (Summer Is Coming) [No Backing Vocals] online. Rock-A-Hula-Luau (Summer Is Coming) [No Backing Vocals] is an English language song and is sung by Zoom Karaoke. Rock-A-Hula-Luau (Summer Is Coming) [No Backing Vocals], from the album Zoom Karaoke - Grease 2, was released in the year 2010. The duration of the song is 3:27. Download English songs online from JioSaavn.