At some point last week the one thousandth person signed up to SongBox (number as I write is 1009). I'm pretty happy about it.
Also, I increased the price of my only paid plan a few weeks ago and was worried that I killed the business, but this week 2 new paid customers have come onboard organically (no advertising running anywhere). I changed the price from $8 to $15 per month.
For transparency... out of 1000-ish members just over 1% of that number is paying.