Pronunciation: [ba͡ɪ ˈi͡ə] (IPA) 
The phrase "by ear" is an idiomatic expression used to describe someone who plays music or learns a language without the aid of written notation or formal training. The first word "by" is pronounced /baɪ/, with a long "i" sound. The second word "ear" is pronounced /ɪr/, with a silent "e". This phrase is often used in musical settings, as playing "by ear" allows for a more organic and intuitive approach to music-making.
The phrase "by ear" refers to the act of doing something, particularly relating to music, without the use of written notation or by relying solely on one's auditory sense and memory. When a person plays a musical instrument "by ear," they are able to reproduce melodies, chords, or songs using their ability to listen attentively and interpret the sounds they hear. This method usually involves the player listening to a piece of music and then attempting to replicate it through trial and error, without referring to written sheet music.
The phrase can also be used in other contexts, such as learning a language "by ear," where an individual solely relies on audio recordings or listening to native speakers to acquire new vocabulary, pronunciation, and comprehension skills. Similarly, "by ear" can describe someone who can tune musical instruments without using electronic tuners or other devices, merely relying on their sense of hearing.
Being able to perform an activity "by ear" often demonstrates a combination of natural aptitude, musical talent, and/or extensive experience. It requires a keen sense of pitch, rhythm, and the ability to discern musical patterns, tones, and harmonies. Individuals who possess the ability to learn and perform tasks by ear are generally considered to have a good ear for music or sound.
The phrase "by ear" originated from the metaphorical use of the term "ear". In Middle English, "ear" referred to the faculty of sense or perception, including hearing. Over time, the phrase "by ear" emerged as a figurative expression, meaning to do something depending on one's auditory perception or musical abilities. Specifically, it is often used when someone plays a musical instrument without reading sheet music, relying on their ability to reproduce a melody by listening to it. The term "by ear" thus signifies an intuitive and aural approach rather than a visual and written one.
