The duo of Small Fools are made up of brother and sister Nathan and Ruthie Prillaman. Born in Potomac, Maryland, the siblings reside at opposite ends of the United States, with Nathan in New York and Ruthie in Los Angeles.

Both are composers in their own right, with Nathan writing for film, ballet and theatre. In film, he specialises in writing historically accurate pieces performed on period instruments, while focussing on neo-classical music for ballet and immersive electroacoustic sounds for theatre. In 2021, Nathan composed a new score to choreographer Norbert De La Cruz III’s work ‘Fluency’ at Juilliard School’s Center for Innovation in the Arts where he is currently serving as part of the music technology faculty.

Ruthie has written for television and has been commissioned by choirs and orchestras across the United States, having premiered a new children’s orchestral work called ‘What About The Duck?’ with the Utah Symphony in 2024. The short 15-minute piece is an intended sequel to Prokofiev's ‘Peter and the Wolf’ inspired by composer Andrew Maxfield’s son. Ruthie has also co-written a best-selling novel with Kate McMillan entitled ‘Maple’s Theory of Fun’, aimed at pre-teen readers.