Complex sentence: Since the mid 1980s there have also been a number of rock bands singing in the other languages spoken in Spain, with the most important such scene being the "Catalan rock", sung in Catalan.
Split into simpler sentences: Since the mid 1980s there have also been a number of rock bands singing in the other languages spoken in Spain. The most important such scene being the "Catalan rock", sung in Catalan.