ABSTRACT
The ever-increasing dynamic, colouristic and pitch range of the piano together with its usefulness in teaching and as a reproducer of music for other media – especially the orchestra – coupled with the increasing army of domestic players, meant that more was asked of it and that, in houses 'of the better sort' one instrument was not enough. Music was required – and supplied – for more than one performer on one piano and for more than one piano, in each case most usually two: the duet and the duo 1 .
