Hi Phoebe,
I am a photographer (and astrologer) based in Birmingham and quite involved with the music scene locally. I've photographed most of the veteran musicians, some of whom have been quite famous in their day, and photographed a lot emerging artists too.
It's a shame I'm not based closer to where you are, but I could come up with some exciting ideas for your artwork, and take a great photoshoot of your band.
To help give you a little more idea of my work perhaps checking my [!] profile will help: Joëlle O'Toole a lot of my music photos are on there and when it comes to photography choosing somebody whose style suits you vision is probably the most important element.
Oh and I'm a bit of a singer songwriter too, my love of music is why I've tended to specialise in music photography, although I do get booked for a lot of community projects too, as I capture joy, interaction and natural connections. I tend to use a zoom lens so that I can get 'real' shots, I'm not into posed set pieces, I find them a little flat. I can imagine doing a collage of natural shots for your group, showing the happiness, and love for the music and the 'family' vibe that you share. ::-)