Watch Online Free HD Solarmovies. With Sounds of Dortmund, Dortmund Opera picks up where MusiCircus left off in the 2018/19 season. Once again, musical groups and all Dortmund residents were invited to become part of the performative sound collage. For one day, Dortmund was to be filled with music, noises, sounds, and performances. A poetic sound art work that focuses on the diversity of the city with its individual sounds.