吉他手发现他的琴弦走调了，演奏时听起来很别扭。

The guitarist noticed his strings were ___out-of-tune, making the song sound off.

她欢快的笑声与葬礼的肃穆气氛显得格格不入。

Her cheerful laughter seemed ___out-of-tune with the solemn atmosphere of the funeral.