Teen queens sing in Simlish

What do 1980s rockers Depeche Mode, hip-hoppers Black Eyed Peas, and teen sister act Aly & AJ have in common? They've all sung in complete gibberish--thankfully, that "gibberish" is the language of one of the best-selling games of all time.

Aly & AJ, who sang the remake of Katrina and the Waves' "Walking on Sunshine" for the Lindsay Lohan vehicle Herbie: Fully Loaded, are contributing one of their songs to The Sims 2: Pets, due out later this year from Electronic Arts. The song was rerecorded in simlish, the indecipherable mumbles of the game's characters, the sims.

"We are huge fans of The Sims, so it was really cool to be tapped to provide music for their latest project, The Sims 2: Pets," said AJ. "When we told EA that we could speak simlish they were really psyched! It was fun to reinterpret our song for The Sims and, ultimately, our fans!"

A new version of "Chemicals React" will be featured in the console, PC, and PSP versions of The Sims 2: Pets. All versions of the game, including Game Boy Advance and DS editions, will be released in October.

For more on the Sims 2: Pets, see GameSpot's previous coverage, or check out a Q&A with Sims executive producer Rod Humble.