In music, pitch is the frequency at which a note vibrates: lower notes have a lower frequency, while higher notes vibrate at higher frequencies. These differences in pitch are one of the standard unique attributes of music.
Even almost all non-musicians can simply distinguish a very low note from a very high one, despite the fact that they might not have the ability to explain why or present any details as to what these precise notes are. Distinguishing pitches that are very close in frequency is another case. This is especially true when the notes sound at the same time.
Even so, musicians definitely need to be able to hear even partially various pitches exactly. Hearing pitch is necessary to a musician’s ability to reproduce those pitches, which in turn makes it possible to play by ear or transcribe music, improvise, or compose.
This isn’t really a scenario of being able to determine a B from a B-flat. Musicians need to be able to identify different pitches that fit within a semitone of one another; this means that, they have to know whether something is in tune or not. If you sing, or play stringed instruments like the violin or cello, this is an especially important skill to possess. If a vocalist is unable to hear pitch correctly, then he or she has no constant way of being in-tune.
Not many individuals are born with the ability to hear pitch correctly enough to reach the needs of the musician. In spite of this, anyone, regardless of their perception of their own ability, can learn to hear pitch. This is done by undergoing ear training. Ear training – which entails several basic exercises intended to develop the learner’s ability to properly hear individual pitches, the durations between pitches, and more – is applied by proficient musicians and virtually all music level programs to ensure that musicians are in control of this important skill.