Best wishes to Riccardo Muti for a speedy recovery. (Video via AC Douglas.) ... Matthew Guerrieri fiercely questions the leadership we are getting from so-called arts leaders in the fight for arts funding. Did Michael Kaiser really write that "the arts are in trouble because there is simply not enough excellent art being created"? If he really feels that way, it might be time for him to pursue a new line of work.... The Detroit Symphony season is hanging by a frayed thread. There's amazing venom toward the musicians in the comments to Mark Stryker's stories. All the outrage would make you think the orchestra was siphoning off millions of dollars of public funds, like a sports team.... Young Concert Artists celebrates its fiftieth anniversary with a free twelve-hour marathon at Symphony Space on Saturday. A hundred alumni, included Emanuel Ax, Ursula Oppens, Jeremy Denk, Sasha Cooke, and the Borromeo Quartet, will participate. Return to Symphony Space on Monday for the Music of Now marathon, with a tribute to the great Gunther Schuller, and on Tuesday for a discussion with the no less great Meredith Monk.... Marin Alsop is the new leader of the São Paolo Symphony. Tim Smith and Jens Laurson comment.... Charlotte Higgins notes that Andreas Ottensamer, the new principal clarinetist of the Berlin Philharmonic and the junior member of the Clarinotts (his father and brother play in the Vienna Phil), is just twenty-one. The average age of the Philharmoniker is now thirty-eight.... Radiohead will release a new record, The King of Limbs, on Saturday.