I guarantee these are the hardest piano poncertos you'll ever hear!
Click the RealAudio sample audio links for any track (the windows media ones work fine), and see if you hear a piano concerto or something a little more.....edgy.
http://www.amazon.com/exec/obidos/ASIN/B00005NWO2/qid=1050814035/sr=2-1/ref=sr_2_1/104-0636745-3671930 
