Thank you for the note - great question. All four of the EPs were shown a completed cut of the film because of their advocacy work on behalf of kids who stutter, and after seeing it, agreed to lend their name to the project to help with promotion efforts. They were/are all incredibly generous in that way. George Springer is actually a person who stutters, and has done a lot of advocacy supporting young people who stutter and raising awareness about stuttering :)