Collaboration

We've had so much great PD about expanding our thinking about how we are teaching our students. I've felt a little bit like 'an island' all alone in my content area. I thought it would be great to have some productive sharing time with other music teachers. I emailed the other elementary music teachers and suggested we get together on our next half day. I only got one response! I'm thrilled to meet with the one other teacher and hopefully I will feel a little less alone, but it would be exciting to collaborate and share ideas with more teachers. How do I make that happen if they aren't interested?