"It's about a person finding another person that they love," Eden said.
The duo have played live before but this will be by far their biggest audience.
"We just thought we'd enter it for fun; to do something out of our comfort zone. [Music] just gives you a good vibe.
"I've grown up around music so it's part of me now."
Meanwhile, Maria will be performing a song called Broken Innocence about someone she met while travelling overseas.
"I guess the beauty of a song is that it can be taken in any way," she said.
"I just want to do the best I can do. It's my last year at school so the last opportunity to do something like this.
Rockquest founder and director Glenn Common said the benefits of meeting fellow musicians and playing to a live audience could not be overstated.
"Becoming a performing artist is not a one-day project.
"It's a long road until you're writing the sort of songs that help to shape a nation's identity, as some past Smokefreerockquest winners, like Anika Moa and Jason Kerrison, have done."
Rockquest starts at 7pm at the Royal Wanganui Opera House.
-Tickets are available at the venue.
