Aly & AJ Celebrate 12 Years Since 'Chemicals React' Was Released

Aly & AJ fans are prepping themselves for new music from the duo, who have not released an original song in a decade — but while we wait, we still have their nostalgic hits to listen to.

“12 years since this came out!” they tweeted from their joint account today in response to a fan sharing a gif, “#chemicalsreact #alyandajareback.”

“Chemicals React” remains one of their most popular songs, and even today most people respond to the opening chords with a knowing smile of recognition.

Aly & AJ‘s new single, “Take Me,” drops August 18th.

Relive all of the magic below!