Listen to I Don't Know Why online. I Don't Know Why is an English language song and is sung by Erroll Garner, John Simmons and Shadow Wilson. I Don't Know Why, from the album The Legendary Music of Artie Shaw, Firehouse Five plus Two, Dizzy Gillespie, Chet Baker and Other Hits, Vol. 4 (150 Songs), was released in the year 2013. The duration of the song is 3:29. Download English songs online from JioSaavn.