In classical music, knowing the people you have trained with has a lot of value! This is why Cori Lint, software engineer at Ovia Health, developed Cello Tree - a directory of cellists to show their relationships to each other. Becky and Jen on Cloudinary's Customer Education team sit down with Cori to learn more about the project and its underlying technologies, which include Python, D3.js and Cloudinary. If you are looking to develop a side project about your passions, this is definitely a DevJams episode you won't want to miss!