Kelly has written songs with and for numerous artists, including Mick Thomas, Geyer, Kate Ceberano, Vika and Linda Bull, Nick Cave, Nick Barker, Kasey Chambers, Yothu Yindi, Archie Roach, Gyan, Monique Brumby, Kelly Willis, Missy Higgins, and Troy Cassar-Daley. He has described how some songs he writes are suited to other vocal ranges. "Quite often, I'm trying to write a certain kind of song and it's more ambitious than what my voice will get to. That's how I started writing songs with other people in mind". Kelly and Carmody's "From Little Things Big Things Grow" was analysed by Sydney University's Linguistics professor James R Martin. " render the story as a narrative ... with the familiar Orientation, Complication, Evaluation, Resolution and Coda staging". Martin finds that Kelly and Carmody made the point that when people exert their rights with support from friends, they may defeat those with prestige.