Antonin Dvorak Piano Quintet in A, Op5. In 1887 Antonín Dvorák revised several of the works he had composed in the 1860s and 1870s, most of which he then published for the first time. In this context he asked the music critic Ludevít Procházka to return a manuscript copy of the Piano Quintet in A major Op5 (B 28), composed 15 years earlier. But after thoroughly revising the work he declined to publish it; instead, he wrote a new piano quintet in the same key – the famous Op81.