changes one's tune

Verb

change one's tune (third-person singular simple present changes one's tune, present participle changing one's tune, simple past and past participle changed one's tune)

1. (idiomatic) To reconsider; rethink; to reach a different conclusion.
   • They say my way of doing things is slower, but I think they'll change their tune as soon as they try it.
2. (idiomatic) To change one's story.
   • The suspect changed his tune when he learned the police had the evidence.