Complex sentence: Its genesis was rather swift and smooth as Strauss was no stranger to the Hungarian influence in the music score as many of his earlier works also bore many such themes such as the polka Éljen a Magyar ("Long live the Hungarians") op.332.
Split into simpler sentences: Its genesis was rather swift and smooth, as Strauss was no stranger to the Hungarian influences apparent in the music score. Moreover, many of his earlier works also bore many similar themes, such as the polka Éljen a Magyar ("Long live the Hungarians") op.332.