Barenboim and Lang Lang
https://www.youtube.com/watch?v=14dwegqniNg
Barenboim - Interview
https://www.youtube.com/watch?v=77T1SzCGzzM
Else Puppulo (Chopin, Etude No.4)
https://www.youtube.com/watch?v=pW-Ijd7chpg
https://www.youtube.com/watch?v=S6vp8QIfcIg
Sir Andreas Schiff
https://www.youtube.com/watch?v=85KJkpbh_us
https://www.youtube.com/watch?v=85KJkpbh_us