One of the founding members of the Australian pop-folk group The Seekers. He was born in Ceylon and is of Burgher descent. In the Seekers, he played twelve string guitar, mandolin and banjo, and sang. He has been the vocal, and often instrumental, arranger for the group throughout its career. Potger contributed the song "All I Can Remember" on the Seekers last studio album Seen in Green as well as co-writing the single "Emerald City". On The Seekers studio album Future Road, Potger wrote or co-wrote four songs: "Guardian Angel/Guiding Light", "Circle Of Love", "Forever Isn't Long Enough " and "Future Road".