Simplify the following text for a Grade 8 native English-speaking person.
Original: The music always includes pieces from the Strauss family -- Johann Strauss I , Johann Strauss II , Josef Strauss and Eduard Strauss -- with occasional additional music from other mostly Austrian composers , including Joseph Hellmesberger , Jr. , Joseph Lanner , Wolfgang Amadeus Mozart , Otto Nicolai ( the Vienna Philharmonic 's founder ) , Emil von Reznicek , Franz Schubert , Franz von SuppÃ , and Karl Michael Ziehrer .
Simplified: The music always includes pieces from the Strauss family ( Johann Strauss I , Johann Strauss II , Josef Strauss and Eduard Strauss ) .