By Kev Geoghegan
Radio 1 music reporter
The new face of British fashion, Agyness Deyn, has explained why she's branched out in to indie rock.
The model shares lead vocals on a new track by New York-based band Five O'Clock Heroes.
Deyn, who has been a friend of the band's vocalist Antony Ellis for around five years, told Newsbeat: "I'm not claiming to be Aretha Franklin, it's just a bit of fun."
The single, Who, is released on 23 June and will be on the band's new album.
She continued: "It's just a happy summery song.
"It's not a Whitney Houston style ballad or anything."
But Deyn says the multi million pound fashion industry is still her first calling and she isn't quite ready to swap the jet set lifestyle of an international model for the life of a penniless musician for good.
She said: "I'm still doing my work, really enjoying that. This is just something that came about with my mates.
"I'm still a model, this is jut a bit of fun really."
Some online critics and bloggers have already sharpened their knives, though few will have actually heard the song yet.
Deyn, who has recently modelled for the likes of Giorgio Armani and Burberry, said: "Yeah, I suppose that's their problem, it's not my problem."
Ellis agreed: "Everybody can take a cynical approach but you let the song stand on its own two feet and then judge it."
Deyn won model of the year at 2007's British Fashion Awards
Of her performance, Deyn admitted: "Obviously I was nervous about it, but you've just got to do it haven't you?
"Being out of the comfort zone and being a bit uncomfortable is part of the challenge, isn't it?
"I want to do well, not just for myself but for the lads as well."
Deyn's contribution goes beyond simply providing the vocals, as it has earned the band more column inches than they would have enjoyed ahead of a standard release.
Ellis said: "I know that we're a hard working band and we've paid our dues on the road and we've toured a lot.
"I know that our music is worthy and if this helps us reach more audiences then great."
She plans on touring with the Five o'clock Heroes in July.