Listen to The Happy Days Medley online. The Happy Days Medley is an English language song and is sung by Kurt Darren, Nicholis Louw, Heinz Winckler, Monique and Ray Dylan. The Happy Days Medley, from the album Krone 1, was released in the year 2014. The duration of the song is 5:46. Download English songs online from JioSaavn.