change one's tune

present singular third person changes one's tune · participle present changing one's tune · participle past changed one's tune · past changed one's tune

1. idiomaticTo 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 more examples

   The heaters, the S.R. now says, will "help tremendously" if there is severe snow and ice—a welcome change of tune from last winter, when the Region was countering criticism of its operation during the January freeze-up with a bland defence of existing precautions [...].

   1962 December, “Talking of Trains: Point heaters on the S.R.”, in Modern Railways, page 371

   Labour frontbencher Louise Haigh (Shadow Transport Secretary for heaven's sake!) initially lambasted TOCs before the handful of specialist rail commentators fell on her tweets and she changed her tune, refocusing her fire on Government.

   2023 August 9, Nigel Harris, “Comment: Disinterested and dishonest”, in RAIL, number 989, page 3

2. idiomaticTo change one's story.

   The suspect changed his tune when he learned the police had the evidence.