Corry and Grennan wrote "Lionheart (Fearless)" with Jamie Scott, Mike Needle, Mojam, Lewis Thompson, Mike Needle, Mojam, Neave Applebaum, and Digital Farm Animals. Corry produced the track with Digital Farm Animals, Thompson and Applebaum, while Scott and Needle were the vocal producers.
The Mojam duo, comprising Mustafa Omer and James Murray, have penned several of Anne-Marie's hits, including "Don't Play
," "Kiss My (Uh-Oh)
," and "Psycho
." They also produced Aitch's "Buss Down
Jamie Scott and Mike Needle are two of Tom Grennan's go-to songwriting partners. Their previous collaborations include "Little Bit Of Love
" and "All These Nights
Digital Farm Animals (real name: Nick Gale) previously worked with Grennan on KSI's "Not Over Yet
" and Clean Bandit's "Everything But You
Lewis Thompson and Neave Applebaum are Corry's regular production partners.