hm...
FallFest 2009 at UCSD (Anberlin, Holy ****, The Game)
Big Time Rush at the Del Mar Fair and one of their other tours
Channel 933 Summer Kick Off Concert 2011 (Ke$ha, BTR, Taio Cruz, Lupe Fiasco, Far East Movement)
Fiona Apple in 2012 in Hollywood
Diamonds World Tour
Nothing Was the Same Tour
Kissland Tour
Usher/Trey Songz/Miguel
Chapter V Tour
The Pains of Being Pure at Heart
The New Classic tour
Childish Gambino
ARTPOP Ball (San Diego and LA)
On The Run
And I'm going to Drake vs. Lil Wayne next month, 1975 in November.