She has brought quality music to the the industry. She has an amazing voice, compared to some other pop artists today. She also writes her own music which is something that a lot of artists don't do...
Pre-teens and early teens tend to buy the most music. They are younger than the age that goes and illegally downloads it. They are also very impressionable and will buy (or have their parents buy)...
Digital music has changed the industry for better AND for worse! For worse, we listen to CD's which have been "engineered" to sound much better than live performances...editing out wrong notes,...
If the digital music you are referring to is to use of programs such as Sibelius, Band-in-a-Box or iTunes, the answer is a huge impact. The music industry in the past few decades has become a handful...