Mild sunburn usually lasts 3-5 days. Moderate or severe sunburn usually lasts at least several days longer. The effects of each episode of this radiation damage, however, are long lasting. Each sunburn increases the risk of early wrinkles, premature aging, senile skin lesions, and skin cancers.
How old does a song have to be to be considered a classic? In my opinion a new generation have to grow to adulthood for a song be regarded as a classic therefore somewhere between 20-25 years would di it.
Teacher is not a good fit: How I teach a beginner 6 year old is very different than how I teach a beginner 16 year old. A good teacher will know the kind of repertoire changes necessary for a student that is 10+ year old. Be vocal to your teacher about songs you want to learn.