The phrase "in ensemble" refers to being a part of a group, specifically one who performs together. Some synonyms for this phrase include "as a team," "in unison," "collectively," "jointly," "together," and "in concert." These words all share the idea of a cohesive unit working towards a common goal. Additionally, "in chorus," "in harmony," and "in sync" can be used to describe a group of musicians or singers performing together with precision and coordination. Regardless of the context, these terms all emphasize the importance of collaboration and cooperation to achieve a shared vision or objective.