Record label Ghostly International has just released perhaps the coolest and most unique iPhone music app ever. I just downloaded this to my phone today and have easily spent 3-4 hours today listening to some great selections from their catalog.

I came to know of Ghostly International through one of my favorite design and music blogs, iso50.com, which is the blog and portfolio of Scott Hansen. Scott is a musician on the Ghostly label, recording and releasing music under the name Tycho.  Scott and other blog contributors post a really great variety of music to the site, with quite a few Ghostly releases included here. The music covers a good range of electronic styles, and this is where the Discovery app really spreads it’s wings.

Using the selection screen pictured above, users choose a mood from the mood wheel, and can use a slider to blend the overall desired musical style. A custom streaming playlist from Ghostly’s catalog then appears based on these selections, and let’s just say I wasn’ t disappointed with a single thing I’ve listened to all day.

I’m not sure of any other record labels that have anything nearly as innovative as this (as far as apps are concerned) but this is certainly a model that could work for every label out there - though I think it serves its purpose best in something as wide-ranging as the electronic genre. I’m entirely impressed both with the creativity put into how it works, and the access to the label’s catalog. I doubt I would hear or discover 1/4 of the artists here if I were simply browsing their site.

I highly suggest downloading this app while it’s still free, but should they chose to charge for it I wouldn’t be dissapointed paying aroudn $5 for this. One catch: it appears to only work with a network connection, so you’ll need wi-fi to use it. My 3G connection would not allow the streaming service to begin.