Listen to Beethoven : Piano Sonata No.29 in B flat major Op.106, 'Hammerklavier' : I Allegro online. Beethoven : Piano Sonata No.29 in B flat major Op.106, 'Hammerklavier' : I Allegro is an English language song and is sung by Miklas Skuta. Beethoven : Piano Sonata No.29 in B flat major Op.106, 'Hammerklavier' : I Allegro, from the album Beethoven Sonata No 29-30, was released in the year 2012. The duration of the song is 12:27. Download English songs online from JioSaavn.