Complex sentence: The music of Autumn Breeze has by critics and music historians been characterized as progressive rock music and synphonic rock music, however without political lyrics, a genre very common during the 1970-and 1980ties in Sweden.
Split into simpler sentences: The music of Autumn Breeze has by critics and music historians been characterized as progressive rock music and synphonic rock music, however without political lyrics. Political lyrics were very common during the 1970-and 1980ties in Sweden.