In September 2007, Miller performed in the New York Musical Theatre Festival, in a show called Tully (in no particular order).<ref>[http://www.broadway.com/gen/Buzz_Story.aspx?ci=551374 Grease Finalists Austin Miller and Kate Rockwell Set for NYMFs Tully]</ref> Since Grease, Miller has starred in the pre-Broadway run of "Trip of Love", and NYMF's Jerusalem Syndrome, as well as the symphony series "Elvis-from Broadway to Memphis".
In September 2007, Miller participated in the New York Musical Theatre Festival, performing in a show called Tully without any specific arrangement. <ref>[http://www.broadway.com/gen/Buzz_Story.aspx?ci=551374 Grease Finalists Austin Miller and Kate Rockwell Set for NYMFs Tully]</ref> Since then, Miller has appeared in the pre-Broadway run of "Trip of Love" and performed in NYMF's Jerusalem Syndrome, as well as the symphony series "Elvis-from Broadway to Memphis".