It’s a given: being happy makes us more productive. A few weeks ago while pairing, we decided that choirs should sing and crowds should cheer whenever we commit. I now have this in .git/hooks/post-commit for the projects that I work on most often: #!/bin/sh afplay ~/.git/happykids.wav > /dev/null 2>&1 & Here is the sound file it plays. I giggle every time I commit. It makes me want to start on the