During his schooling life in Melbourne, Australia, he attended Melbourne High School - a selective-entry, all boys' school in South Yarra, Victoria.
At his Australian Idol audition, he played a self-composed song called "Nice to Meet You".
He sang "I Don't Wanna Be" by Gavin De Graw for his elimination performance, and later performed the U2 smash hit "Beautiful Day" with Chris Murphy.
They became close friends and impressed the judges with their voices and their camaraderie.
Later that year Geyer supported ARIA Award-Winning Duo The Veronicas on their Hook Me Up Australian Tour.
In March 2008 Geyer portrayed the role of then fiancee Lisa Origliasso in the duo's music video This Love.
In 2004, Geyer formed a band called "Third Edge" and recorded his original music at Studio 52.
He joined the cast of the US show Glee in the 4th season as NYADA Junior Brody Weston and appeared in Terra Nova as Mark Reynolds.In the weeks leading up to the final of Australian Idol 2006, Geyer was selected by both Mark Holden and former Idol judge Ian Dickson as their favourites for winning the competition.