https : / / www . youtube . com / watch ? v = erD 1 Yy - 4 F 5 M 동영상 Beethoven : Sonata No . 29 in B - flat Major , " Hammerklavier " ( Levit ) And here ’ s the biggest one of them all . The weird , titanic , gnarled , joyous , grief - stricken monster that is the Hammerklavier . Where . .. www . youtube . comdh ﻿