Juanes Picks Best F*** Music!!!

Juanes -- the insanely popular Colombian singer -- knows what to listen to if you wanna make a baby.

We got the Latin rock star at Catch Wednesday when he gave our photog -- who's in the market for a bambino -- some advice on background noise.

Juanes is pretty excited about his first English-speaking album, "Goodbye For Now," which he recorded with Poo Bear, Justin Bieber's producer.