Listen to Don't Know Why (Delaney Bramlett Mix) online. Don't Know Why (Delaney Bramlett Mix) is an English language song and is sung by Eric Clapton. Don't Know Why (Delaney Bramlett Mix), from the album Eric Clapton, was released in the year 2006. The duration of the song is 3:43. Download English songs online from JioSaavn.