Nice.

You could also just keep it A440 and write a piece in the key of Av (A half flat or whatever one step down from A is). It wouldn’t be exactly A432 but I don’t think anyone would notice.

Here's some 31edo for your pleasure: [https://app.box.com/s/kvh517j8dliechbe8kqjq9kydvr5wr83](https://app.box.com/s/kvh517j8dliechbe8kqjq9kydvr5wr83)

1. Set A = 432 Hz
2. Write a piece with the tonic in At (A plus 39 cents in 31edo)
3. So your piece is technically 432 Hz while in reality being just 7 cents sharp of 440 Hz
4. ??????
5. PROFIT

PS: The difference between both A is ~32 cents. The 31edo is not very optimal for the job, but it allows you to write `in At Major` or `in Bbb Minor` in the title (so nobody can call you a lier).

PPS: Occasional modulations down a diesis would be nice to have too.

A trick with the reference pitch