His compositions have been featured on various television programmes, including Waterloo Road, and have been performed by Icebreaker and the Sirens of Titan choir.

[1] Duncan's solo music takes in both classical and modern music and has been described as combining lush choral harmonies and acoustic instrumentation, textured like contemporary dreampop, and a cross of lo-fi folk with the harmonic width of choral composition.

[1] Duncan is gay and wishes to use his platform as a recording artist to champion LGBT causes.

"[9] In a 2019 interview with Scottish broadsheet newspaper The Herald while promoting his new album Health, he explained to writer Martin Williams that his coming out was difficult intellectually to him and he is eager to contribute his point of view to the alternative music community: "It is still a funny thing to have to do (come out to family and friends) because of the years of nerves before you do it.

You kind of have a switch that goes on and off, certainly for me, but I now know exactly who I am...Gay alternative musicians are not that common, so I hope I can add to the group that are already there.