Your first concert was to see who and when?

My first rock concert was The Doors, Fillmore East, March 22. 1968, 8PM show, as a 14 year old HS freshman with HS buddies.  What an introduction to rock concerts.  

Classical music was well before that, I believe at 10 years old seeing Carmen at the old Metropolitan Opera House.  I also remember seeing Young Peoples Concerts,, New York Philharmonic, Bernstein conducting at Philharmonic Hall at an early age.  My parents got me hooked on classical.  
 

Jazz was before that.  Probably at 8 years old.  I can visualize to this day Guy Lombardo pulling up to the stage at the Jones Beach Theater in his stunning wood power boat and leading his orchestra.  

The Beach Boys in the Summer of 1964 at the San Jose Civic Auditorium, with Brian playing bass and singing falsetto.

The opening act was The Tikis, a Surf band from Santa Cruz. A coupla years later they changed their name to Harpers Bizarre. Future Warner Brothers record producer Ted Templeman was a member.

Led Zeppelin 1975 at the Greensboro Coliseum.  I still have many of my ticket stubs including from this concert.  Just imagine - $7 to see Zeppelin.  Second time I saw them in 1977 the price had gone way up to uh.. $9.

Grand Funk Railroad, American Band tour.

The Kinks in 1979 or 1980 at the Fabulous Forum in Los Angeles (Inglewood, to be exact).