Listen to Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso (From "Harold and Maude") online. Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso (From "Harold and Maude") is an English language song and is sung by London Festival Orchestra, Alberto Lizzio and Dieter Goldmann. Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso (From "Harold and Maude"), from the album Top 200 Movie Classics - The Very Best Classical Music from the Cinema, was released in the year 2012. The duration of the song is 21:53. Download English songs online from JioSaavn.