user: Article: Hearing loss is the third most common problem in the U.S. and can result from overexposure to chronic loud noise, like the kind you might listen to with headphones. Damaged hearing can even limit your physical ability to hear a certain range of sound or cause a persistent ringing in your ears.  Defend your ears by listening to music at moderate to low volumes and wearing earplugs around loud, chronic noises, like a construction site. Sounds as loud or louder than normal traffic can be harmful to your hearing. Western music is represented by a set of rules, referred to as music theory, and by knowing these rules you can help your mind interpret the sounds you hear. Understanding that a basic chord has at least 3 notes in it, for example, will help your ear pick out the 3 different tones. You'll want to have a functional understanding of:  The musical staff and bass and treble clefs. The staff is comprised of 5 lines and 4 spaces that represent the notes in a scale, with each line/space corresponding to a white key on the keyboard. A treble clef, which is shaped similar to an "and" sign (&), or a bass clef, shaped similarly to a backward C with a colon (:), start each staff.  Ledger lines. Ledger lines are small lines drawn above or below the 5-line 4-space staff to represent notes that are higher or lower than the common notes of the regular staff.  Common intervals. Music is arranged according to lines of a staff or, comparable, to the white and black keys of a keyboard. The distance between the 2 neighboring white keys is a whole step, also called a second. Black keys represent half steps between white key whole step intervals. A major third, like the interval between C and E, is made up of 2 whole steps (C, D, E) or 4 half steps (C, C#, D, D#, E). Scale degrees, which are the special names for notes your scale. These names, starting from the root of a major scale like C major, are: tonic, supertonic, mediant, subdominant, dominant, submediant, with the seventh interval called a leading tone if the interval between it and the tonic is a whole step or subtonic if that interval is a half step. There are many goals you might want to accomplish over the course of your ear training. One of the most impressive is "perfect pitch," which is where an individual can identify and recreate a musical tone without any point of reference. Even among master musicians, perfect pitch is rare, but more reasonably you might hope to gain:  The ability to identify intervals, musical keys, and/or recreate notes from memory. The ability to tune pitches by telling if they are sharp or flat. The ability to imagine the sound of music from notes without a point of reference. Different regions and cultures produce different kinds of music, and knowing these will further expand the powers of your musical ear. Some Asiatic music is based around a 5-note scale, called pentatonic, while Western music is characterized by an 8-note scale.  Listening to classical music can expose your ear to many difficult and intricate composition. There are also many difficult intervals that are infrequently occurring in contemporary music that are more common in a classic style, like opera. Sing along to your favorite pop artists in the car. Though you should be careful when doing this, as it is easy to pump the volume of your favorite tunes and sing too loudly, which can lead to vocal strain. Throughout the process of mastering an instrument, you will be exposed to musical theory and practical exercises. Your practical exercises likely take the form of learning specific songs for practice. Through these songs you'll gain a better understanding and intuition of how notes work within a piece of music. Studying piano will familiarize you with both treble and bass clefs, as well as different keys and styles. Due to its versatility, this instrument is considered to be ideal for studying and training music theory. A professional musician has years of experience tuning instruments, listening to music, and hitting pitches spot on in the hopes of creating the best possible music. Working with such a person will be an invaluable resource for developing your ear.
Question: What is a summary of what this article is about?
Protect your hearing. Know the theory behind the sound. Identify the kind of ear training you want to do. Listen to various kinds of music. Learn an instrument. Train with a professional.

If you didn't do a bleach bath, or if the wig has dried since you did it, wet it thoroughly in the sink. Work at least 2 ounces (57 g) of conditioner into the wig and leave it in. This will heat the wet hair slightly and create some steam inside the bag, which will help to moisturize it. Use a zippable bag that's large enough for you to fit the wig inside it and seal it tightly. The bag may be hot, so be careful when handling it until it has cooled down. Letting it sit in the bag will give it time to absorb the water, steam and conditioner. You can also place a hot steamed towel over the bag to help retain some of the heat while it sits. Hold the wig upright or place it on a wig head and gently run a comb or brush through it while it's still wet. It should feel smooth and detangle easily. Gently squeeze any excess moisture from the hair and then set it on a wig head to dry. You can also pin it up by its cap to dry, but this could slightly stretch or distort the shape of the cap.
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assistant: Saturate the wig with conditioner while it's still wet. Place the wig inside a plastic bag and microwave it for 30 seconds. Let the wig sit in the bag for at least 1 hour. Comb the wig with a wide-toothed comb or vent brush. Let the wig air-dry on a wig head.