Born in 1985 in Seattle Washington, USA, Mack started playing piano at the age of three. Studying classical piano seriously until age fourteen, he then became interested in jazz and blues music and started studying with Larry Key. Upon graduating from South Kitsap High School in 2004 Mack won the national Louis Armstrong award, and obtained scholarships to multiple schools including Berklee College of Music and Cornish College of the Arts. At Cornish he studied jazz piano performance and composition under his mentors Dave Peck, Denney Goodhew, Randy Halberstadt, Chuck Deardorf and Jim Knapp, graduating magna cum laude in 2008.

Since then, Mack has worked full time as a jazz composer, soloist and band leader, performed nationally and internationally in styles from jazz to pop and everything in between, and also worked abroad for several years as a musical director for international jazz clubs throughout Asia. As an instructor, Mack has taught at colleges in the pacific northwest and mentored a full studio of serious students, over a dozen of which have gone on to continue their music study at high level conservatories around the world. Mack continues to perform as a soloist and sideman in original projects, and in 2019 founded Seattle Jazz Academy, a school for serious pianists interested in jazz and improvisation.