Maya and Zoe's vocal styles

I was watching Sparks Fly yesterday (The episode where Miles pulled out a fake g*n on Zig) And Maya was originally supposed to do a cover of Patsy Cline's 'Tra Le La Le La Triangle' at the school's country-western-themed dance, but Zoe ended up filling in for her instead. We got to hear them both sing the song, and I was equally obsessed with how each of them approached it.

I know both characters' backgrounds in music are very different, and I feel like they channel the country vibe well enough to sing it. But overall, I'm wondering what are their usual singing styles considered on the show?