So how then, you might ask, do moments like the below happen?
Rosenblum shares a few tips that these American Idol wanna-be's might have tried.
First, try singing slower. This "likely provides the novice with greater vocal control, including the ability to make quick corrections soon after a note is initiated."
Second, do not try to match the singing of your favorite music star. He said that "inexperienced singers are notably worse at matching pitches," but do better when left to choose their own preferred key and range.
If you sing karaoke, pick songs that best match your own natural range. Most people do little homework before grabbing that public microphone, but a little preparation can allow you to impress your friends.
Singing is a form of communication, so even if you feel nervous and are inclined to divert your eyes, try crooning to individual audience members that are really paying attention. Your presentation will likely seem more natural then, with more true feeling.
Rosenblum writes that if "you do decide to improve your singing by active rehearsal and instruction, chances are that you can make positive changes in your singing, and in your brain."