Number of concerts the New York Philharmonic had played as of May 5, 2010:

15,000
On May 5, 2010, the New York Philharmonic played its 15,000 concert since its' first performance on Dec. 7, 1842.
Source: New York Times, 5/8/2010

 
   
  The New York Philharmonic plays its first concert:

Dec. 7, 1842
On Dec. 7, 1842, the New York Philharmonic Society played its first concert in front of an audience of 650 at the Apollo Concert Hall at Broadway and Canal Street. The program included Beethoven's 'Symphony in C Minor' and Weber's 'Oberon Overture.'
Source: Newsday,

 
   
  Number of classical commercial radio stations in the U.S. as of March 2010:

18

Source: New York Times, 3/24/2010

 
   
  Number of left-hand movements required of cellists in Mahler's Fifth Symphony:

6,400
According to Janet Horvath, principal cellist with The Minnesota Orchestraand author of "Playing (less) Hurt: An Injury Prevention Guide for Musicians."
Source: Miami Herald, 4/12/2005