David Austin is quite a talented composer. He is currently in "I Love You Because" Off-Broadway, which was written by another contemporary musical theatre team you might want to look into, Ryan Cunningham (lyrics) and Joshua Salzman (music). I checked out the "I Love You Because" website to see if there was a way to contact them, but didn't see that as an option. I know they are all with BMI though so you may be able to contact them through the workshop.
Jeff Blumenkrantz is also in the workshop but I believe you can contact him through his website. It is a shame that there aren't any audio files on his site, but I think it is well worth it for you to get in touch with him. I've only heard a handful of his songs (in live settings) but they were fantastic. Color me impressed. A truely outstanding writer.
Have you checked out the NEO CD? It’s a recording of a benefit for York theatre that featured work from "New, Emerging, Outstanding" theatre writers. You can get a taste of a lot of new talent on that. I'm familiar with many of the composers / writing teams represented on the album through various cabarets/showcases/shows etc. and can particularly recommend you look into (if you have the time and patience for a lot of Googling) Daniel Aquisto/Sammy Buck (I loved their musical "Like You Like It" at NYMF ’04), Todd Almond/Gus Kaikkonen (their musical "People Like Us" at NYMF ’05 had some stunning songs in it), Doug Cohen, David Friedman, Jenny Giering (I loved her "Mistress Cycle" at NYMF ’05, but I also attended a concert of hers a few years ago where she performed some folk/rock songs very different from her "Mistress Cycle" score and I thought they were amazing), Brad Howell Houghton, Tom Kitt/Amanda Green, and the aforementioned Peter Mills. (I would include Brian Lowdermilk/Kait Kerrigan in this list, but I see you have already contacted Lowdermilk.) Other composers whose work I've really enjoyed in cabarets and I recommend looking into are Brett Kristofferson and Gary Negbaur.
Jamie McGonnagal was the director of NEO and seems to know a lot of "up and coming" composers. I have seen him post around these parts, so you might want to try reaching out to him. He may be able to assist you with contacting any of the above and maybe recommending a few others.
Hope this helps.
Updated On: 2/2/06 at 12:47 PM