What's the Name of That Book??? discussion

I remember a fantasy book that was probably published in the early 2000s or 90s. I remember reading it in the 2000s. It was part of a series of YA books where the focus was on a different element: wind, water, fire, and earth. The characters encounter figures from Greek mythology. For the wind book, I remember the cover was a bunch of kids outside where it was windy. I think there was a feather. I remember for the earth book, they meet Vulcan, the blacksmith god in a underground place. I think but I am not sure that the plot was the kids have to find objects associate with the different elements.

Derrick, can you look at your two other open threads and give us any status updates - did you find those books or are you still looking?

https://www.goodreads.com/topic/show/...

https://www.goodreads.com/topic/show/...

Magic Elements Quartet by Mallory Loehr maybe?

That the book series. Thanks Ayshe.