The main highlight is that it combines two applications into one: read and learn something new, and/or immediately test or consolidate your knowledge in 4 modes, similar in type to Quiz: to something/someone of the four options to find the right one with three different modifications: the usual classic, for life and for time without saving:• match a musical group to a fact• mirror the fact to the music group in reverse• answer "true" or "false" in the same mode• specify which emblem of the music group is on the photo in the "Photo" mode.And if you accidentally close the application, no problem! The app remembers where you left off. This will allow you to resume reading or continue checking your knowledge from where you left off, whenever it suits you. Read and favorites, however, will always start from the beginning, but these two modes are searchable. You can also add facts to your favorites as you read, as well as copy them.The app presents historical facts about musical groups, or to put it another way the phenomenal achievements of musical groups mainly from the 20th century, among them: The Beatles, Scorpions, AC/DC, Deep Purple, ZZ Top.I hope that you will have a pleasant time in the application, as well as learn something new and expand your horizons!