OMG,
epee_girl, there's a show on the telly about an Argentinean singer visiting his mom, and guess where she lives! In ROSARIO! I'm taping it (or trying to), and if you're interested, I can upload it for you. :D (Though the guy's German isn't the best ever, so it's probably not too suitable for your German practice. *LOL*)
ETA:
nadiamdq, I'm getting convinced that you're right - half of Argentina's male population is probably called Martín. At the beginning of this show already, the singer met a guy called Martín, who apparently is responsible for a national park near Buenos Aires.
ETA 2: Okay, half of this show is pretty landscape and information, and the rest is a guy standing in the middle of something and singing cover versions of sappy love songs (in Spanish and German). Typically, he doesn't have a microphone, and there's lots of hand gesturing. ARGH. Argentina, the things you make me do.
*continues watching*
ETA 3: The current song the guy is performing is called "Komm und küss mich, corazón." ("Come and kiss me, corazón.") MY EARS. (Un)fortunately, the awesome landscape pictures still make up for the rather horrid songs with their "creative" titles.