They are rarely in one city for long, and rarely together!

Kanye West left his Hollywood Hills home this morning and caught a flight out of LAX en route to Mexico, and the rapper was flying solo because wife Kim Kardashian and daughter Nori are currently in New York City.

At first we thought Yeezy was headed south of the border for vacation, but after a little investigation we realized the Louis Vuitton Don has been working on his upcoming album at a recording studio in Puerto Vallarta! "His whole crew is out there recording. His whole music studio was shipped out. It's been amazing," a source recently dished to E! News.

We wonder if he kicks it with Kimmy K's pal Joe Francis, who owns a house nearby, on his off time?