Songstarter
Tell it who you are, how you feel, and the vibe you want. It gives you a specific situation to mine, a perspective, an opening line to react to, and a key/tempo to try.
How to use Songstarter well
This tool doesn't write your song for you. It gives you five specific constraints, which is usually what a blank page is actually missing. The trick is to treat the output as something to argue with, not something to obey.
Be specific in the inputs
"Sad" will give you a sad cliché. "Quietly resentful of my sister" will give you a song. The more grown-up and specific your mood word, the more useable the output.
Don't accept the first starter
Hit Another three or four times. The first starter is almost never the one. Often the fourth one hits a nerve you didn't know you had.
Ignore the parts that don't fit
If the key suggestion is wrong, ignore it. If the perspective feels forced, ignore it. Take the one thing that landed and go.
Use the metaphor territory as your only rule
If it says "water × old machines", try writing the entire song without any words from outside those two territories. You'll be surprised what comes out.