Chopin wrote two piano concertos in which the orchestra is relegated to an accompanying role. Schumann, despite being a pianist-composer, wrote a piano concerto in which virtuosity is never allowed to eclipse the essential lyrical quality of the work. The gentle, expressive melody heard at the beginning on woodwind and horns (after the piano's heralding introductory chords) bears the material for most of the argument in the first movement. In fact, argument in the traditional developmental sense is replaced by a kind of variation technique in which soloist and orchestra interweave their ideas.