The length of practice will affect retention as well. Even though they both practice daily, there is an enormous difference between a person who practices three hours a day and one who practices five minutes a day. Those students who fail to practice sufficiently fail to acquire ability. It is estimated that most adults are not able to maintain an effective concentration span of more than 35 to 40 minutes at a time. Band directors should keep that figure in mind when they set their weekly practice requirements.
Careful teaching helps students gradually create effective practice habits.
Yes, thoughtful and regular practice can make perfect. It can also make students feel good as a result of the self-discipline, the sense of accomplishment and that intangible aesthetic factor, making your own music.