The phrase "dancing to another tune" is an idiomatic expression used to describe someone who is behaving differently from how they normally would due to external circumstances. Some synonyms for this phrase include "marching to a different beat," "singing a different song," or "following a different path." These phrases all suggest a deviation from one's typical behavior or beliefs, often in response to pressure or influence from others. Other synonyms may include "changing one's tune," "altering one's course," or "shifting one's perspective." Overall, these phrases convey a sense of adaptability or flexibility, while also implying a potential loss of individual agency or identity.