We’re on the cusp of yet another RPM Challenge. This will be my fifth year participating in the challenge, and my planned project this year should definitely be my most unique challenge to date.

As I’ve noted previously, this year I will be recording my album entirely using my iPhone. I will record some/most of the tracks into GarageBand on my Mac, and I will do further post-production with the Mac, but I’ll produce every sound with — or through — the iPhone.

As an added challenge for myself, usually I enter into a recording project with an overarching concept. This year, the only concept is that the iPhone is the instrument. Usually I come in with a clear set of song ideas or an overall compositional structure for an album, and quickly arrive at completed songs. (Last year, for instance, I had one song — “Spooncherry” — completely “in the can” by 4 AM on February 1.) This time around I am going to try to just record as much material as I can, in whatever form it may take, for the first half of the month, without working up any of it into a final state. And then I will spend the second half of the month sorting through the debris and trying to make sense of it all.

We’ll see.

I know I am not starting a revolution by making music on the iPhone. Plenty of people are doing a lot more with this than I am. I am just curious to see what I can produce. There is some precedent in my own work: I recorded the theme song to my podcast entirely on the iPhone (using the iPhone version of GarageBand), and earlier in January I recorded a 3-song EP on a Saturday afternoon.

It begins at midnight.