There are numerous synonyms for the phrase "playing it by ear." A few examples include: improvising, winging it, flying by the seat of your pants, ad-libbing, or spontaneously reacting. All of these phrases describe a situation where a person is dealing with something in an unscripted, spontaneous way. Whether it is a musical performance or a speech, not having a plan can be both exhilarating and nerve-wracking. While some people thrive on the thrill of the unknown, others may prefer a more structured approach. Regardless, it is always useful to have a few alternative phrases in your vocabulary to describe the art of improvising.