everything be german perfect in this film . however do not equal this comment to coldness or steel like perfect . profound emotion be convey all along through it . i be a professional pianist or composer or arranger or orchestra director myself and and yes and for musician it be immediately evident the 12 yr old kid be actually play . furthermore and he play with emotion and virtuosity and sense of humor and wit . the grandfather be play by great german actor bruno gantz ( who indeed play one of the most realistic portrayal of hitler i have see and in the fall last day of hitler . or something like that ) . the original music be just wonderful and not to mention the rendering of work by the classical music master . the casting be perfect and and the story or script simply get unbeatable due to the writer avoid the focus only on the kid musical virtuosity and but due to his high iq he mix in internet ( it ) and wall street issue and business and parent son relationship and grandfather grandson relationship . i be the father of three ( boy 30 and boy 24 and girl 18 ) and also have a close relation with my grandfather . everyone be simply perfect . don not miss it .