What’s played over the speakers at Logan originates in a room in a yellow house in North Providence. --- This question of how to please everyone is something that many large public spaces — and small private spaces — deal with on a daily basis. This desire to please the largest crowd — or not to offend — drove the popularity of “elevator music.” On some level, this challenge continues to drive companies like Spotify to create better and better algorithms. And it drives Dalzell to continually add and delete, listen and select.