Ahh, for a week to write in an inspiring setting in the company of other creatives! I just learned from the good folks at Fishtrap's Imnaha Writers' Retreat that they still have a few spots open for their annual writing retreats in April. Do you know about Imnaha yet? If not, you'll probably want to. Every year, they make a limited number of one-week writing retreats available during the month of April.
The retreat takes place at a remote cabin in Oregon's upper Imnaha River, and by remote, I mean you will walk across a suspended footbridge to get to the cabin (a cart is available so you don't have to carry your bags). Up to five writers luxuriate in the glorious Oregon countryside, respecting a quiet time during the day, and having the option to share work and stimulating conversation in the evening. The pricing uses a voluntary sliding scale, with the lowest fee being only $280 per week, or more if you choose and can afford it.
This year's retreats take place April 6-12, April 13-19, April 20-26, and April 27-May 3. I'm not sure which dates are already filled, but contact Imnaha to find out if the week you'd like is available. You can learn more about the retreat at the Imnaha Writer's Retreat web page.
PS - "Writer" is defined loosely, and includes writers of all kinds, including songwriters.
PPS - They also have a treehouse in addition to the cabin, so definitely ask about that!