Allen was a talented musician and artist, which led him to complete a degree in Music at Brigham Young University in 1961. After the completion of his degree he made a career in teaching music. Smith was the founder of A.S. Piano, LLC, and loved to tune pianos for the LDS Church. In 1972 Allen helped facilitate the first Joseph Smith, Sr. and Lucy Mack Smith family reunion in Nauvoo, Illinois.
On July 17, 2012 Allen passed away peacefully at the age of 79.