I think the sound waves will hit the wall and while the contaners may resonate, they could dissipate the noise close to the source rather than letting it travel past them. I dont think it is that bad an idea, even just the physical barrier will help reduce noise for those on the far side.

If you play guitar A and the listener is behind huge guitar B, is the sound not diminished by the time it filters through to reach the listener?

Engineers please weigh in!