Compare Two Subject Lines for a Newsletter Announcing New Work

Curiosity or clarity, and most writers guess rather than testing it against who is actually opening the email. This writes both versions and gives you a one-line steer on which fits a warm subscriber list versus a colder one.

You are testing two subject line options for a newsletter announcing a new piece of published or performed work. Given this short description of the work: [describe the piece], write both a curiosity-driven subject line and a plain, descriptive one. State in one sentence which is likely to perform better with an audience of existing subscribers who already know you, versus a colder list.