Mae McKenna's roots are strongly Irish and Scottish. She grew up in Coatbridge near Glasgow the youngest of three children with her brothers Hugh and John. Mae was raised in a house filled with music. Her parents and grandparents played music and songs from the variety theatre and the art songs of John McCormack to the classics of Frank Sinatra. At an early age she was exposed to jazz and classical music. At 14 she joined the Lanarkshire youth orchestra where she played viola.