Reflections on "Landfill Harmonic" video

This is the incredible and moving video the students watched in my class at the end of this year.  We had a thoughtful discussion about their thoughts on what these people have accomplished.  Here are some examples of what they asked and shared.

Why does it make us feel happy for these people but uncomfortable at the same time?
    -We are so glad for these kids that they can play instruments too.
    -...but it makes us feel bad that we have so much and they have so little.

What have we thrown away that could have been used for an instrument?
Why was it so important that they didn't just give them instruments but instead taught them how to make them?