Listen to How Do I Know online. How Do I Know is an Unknown language song and is sung by Andrew Rayel. How Do I Know, from the album A State Of Trance 600 (Mixed by Armin van Buuren, ATB, W&W, Rank 1 & Andrew Rayel), was released in the year 2013. The duration of the song is 3:44. Download Unknown songs online from JioSaavn.