Mahler significantly “reworked” six of Beethoven’s nine symphonies. “Mahler’s editing of Beethoven generally pleased performers. But he made his changes in red ink on the printed music. Critics saw a lot of red ink and they raised the roof.” Now Leonard Slatkin and the National Symphony plan to perform the remade 9th symphony. “For those who know this music well, you’ll have fun spotting the differences.” – Chicago Tribune (AP)