Thirteen was recorded in Peterborough Ontario in August of 2020. Irish Millie met producer Gregory Pastic of LaunchPad Records while preforming at The Peterborough Farmers Market. They worked together for a year to record, and produce, Thirteen, Irish Millie's first album. Thirteen garnered Irish Millie a 2022 Canadian Folk Music Award nomination in the category of Young Performer of The Year.