When I'm 64+3The Associated Press reports that Paul McCartney will be performing the first concerts at Citi Field, on July 17th & 18th, 2009.   There is no word on whether Sir Paul can hit a curveball, or play shortstop.Those of you born before the invention of the iPod may recall that McCartney once sang and played bass guitar for an obscure musical oddity know as The Beatles.   On August 15, 1965 those very Beatles performed a 30 minute show before 55,000 screaming young girls at Shea Stadium.   One fan even brought a banner with his name on it, seen here:The letters P-A-U-L on a banner, backgroundJohn Lennon, Paul McCartney, George Harrison and Ringo Starr together as The Beatles ruled the musical world long before MTV or .mp3 entered the lexicon.   You can look it up.   Shea Stadium is gone, as are John Lennon and George Harrison.   But the music of The Beatles lives forever, ironically because of the .mp3, and a little bit of it will return to Queens for 2 nights this summer.Only $4.50 per ticket, must've been before Ticketmaster