How long can RBD-mania last? At least one more album, it seems like. The peppy pop Mexican sextet (Anahi, Dulce, Maite, Alfonso 'Poncho,' Christian and Christopher), weaned from a TV teen soap opera and now with its members well past the 20-year-old mark, has labeled its new set Empezar Desde Cero (Starting From Scratch), but don't take it literally.

Empezar Desde Cero is more of the same RBD, meaning, catchy, pretty pop that sticks very closely to the winning formula. And that's not a bad thing if youre one of the hundreds of thousands who have liked RBD's facile fare in the past. As on past albums, here each track features different lead vocals -- sometimes male, sometimes female -- and the full sextet for most of the choruses.

The bouncy title track sets the tone, kicking off with a solo female verse that segues into the eminently easy to remember, easy to sing to chorus that plays over light, rhythmic percussion. The ensuing "Y No Puedo Olvidarte" is slightly more complex, initially alternating male and female verses over a simple melody, then evolving into a bit of electronica and male/female harmonies. The change of pace continues with "Inalcanzable," a sweet ballad set over gentle piano lines. Yet, like most of RBD's songs, its chorus is anthemic and memorable, one of the keys to RBD's success.

This happens even when the songs lean a bit more toward rock, as is the case with "No Digas Nada." A sexy, attitude filled song with bluesy guitars, it stretches the boundaries of what RBD has done in the past. And while it certainly doesn't fall into the realm of rock, it sounds more like Alejandra Guzmán than Timbiriche, for example.

While the bulk of Empezar is female driven (honestly, they are better singers and theirs are the best tracks), there is the occasional male lead vocal. Among these, the stand-out is "Llueve En Mi Corazón," another rock-leaning track with hefty electric guitar lines.

Be sure to stick with Empezar Desde Cero all the way to the end, and youll be rewarded with "Extraña Sesanción," a dance track that can work both for clubs and shows.

Yes, RBD has kept to their catchy formula, but they're also trying to keep in touch with a fan base that is growing up and is now most definitely over 21.

By Leila Cobo