Concerts that I attended: Nirvana & Pearl Jam
I envy you and hate you.
D:
Anyways, I've seen the current musicians in concert:
THE MARS VOLTA!!!!! They performed at a Caf? in Old San Juan were the Puerto Rican guitarist of the band used to visit. I JUST SO HAPPENED TO BE THERE, cause I hang out in Old San Juan a lot. One of the greatest nights of my life, oh my god...
LATIN REGGAE FESTIVAL earlier last year....OH. MY. GOD.
THE WAILERS. GONDWANA. CULTURA PROFETICA. LOS CAFRES.

!!!
THE POLICE. :] Enough said.
Iron Maiden
Dream Theater (Twice, actually...)
Between the Buried and Me
Papa Roach
Lifehouse (LOL, I got the tickets for free and took out this friend of mine on a date.)
Korn
The Rolling Stones (Just freaking awesome.)
Scorpions
Def Leppard
Aerosmith
Guns N' Roses
Van Halen (This concert was kickass, with excesive swearing and crude, sexual humor.) XD
Rush
Santana
Robi Draco Rosa
Calle 13
Juanes
Tommy Torres
Juan Luis Guerra
Shakira (Hips don't lie, especially live.)
Ednita Nazario
Ricky Martin (Don't ask...I was like 7....LOL)
Caf? Tacuba
Los Fabulosos Cadillacs
La Secta All Star
Black Guayaba
Skapulario
Le?n de Jud?
Man?
Paul Van Dyk (I got so wasted, I only remember half and I just have to say the concert ruled.
DJ Tiesto (OMG, TWICE. $@$#%&@ TECHNO PARTY = AWESOME.)
David Guetta
Bob Sinclair
Paul Oakenfold
Chris Rock (Not really a concert, but you have no idea how much I LOL when he came here.)
Facts:
The Mars Volta performing at that Caf? was like, holy [censored]. I can't express how awesome it was just seeing them at a local cafe, a place unknown to the world but known to locals.
The Latin Reggae Festival held earlier last year was freaking amazing. All of my current favorite Latin Reggae bands performed and other bands as well. :]
As you can assume, most of the bands there that are from the 70's, 80's or early 90's were in their greatest hits tour or reunion tours (like The Police concert or the Scorpions concert). xD
Musicians or bands which names that are in Spanish are either famous local bands from here or famous Latin musicians around the world who have had concerts here.
Chris Rock was hilarious. I laughed my ass off. XD
I have gone to like 6 techno concerts in the course of 2 years.
P.S: I plan to go and see Santana again this March, he's coming back to Puerto Rico.
