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Classical--very trilly, and very many dance works. There were cadenzas but not too many solos. The theatres were smaller but gaining momentum. No electricity yet so nothing too loud and bangy.
romantic--ensembles increased in size dramatically. Solos were HUGE!!!! Not so much the trills but definitely much longer pieces. Loud and bangy music was being produced. The piano was now in many ensembles and orchestras. Those music rules were being abandoned (tritones allowed), and our musical theory was well-established. Chordal changes were very apparent. It wasn't so much the I-IV-V chords but now 7ths, 9ths, 2nds, and full chords that went from I-ii-iii-V....change in structure! Plus, the ABA sonatas formed