Ignaz Friedman (above) gave some valuable advice to Australian pianist Mack JOst:

"The way you create it is to hear the sound in the heavens, then try to reproduce it in your arm. The only way is to free them [the arms], and I can always remember him saying 'draw out the sound on the last one... think of drawing out the tone.' Not hitting the key. You're really thinking of hauling it out."