Bibio's output on Mush Records mostly consisted of instrumental compositions, centered around looped guitar melodies, ambient field recordings, found sounds, tape distortion and manipulation, and gentle synth drones. Only occasional songs featured vocals ("Mr. and Mrs. Compost", "Great Are The Piths", "Abberiw", and "Flesh Rots, Pips Sown"). Bibio occasionally worked with Letherette during this time, after Wilkinson met Richard Roberts working at the same pub as him. They began a short lived project called SK Dreams, Roberts co-wrote and co-produced several Bibio songs, and the three along with Matt Cutler started a record label named Artists' Valley, which released a limited 7-inch Bibio single "Shelia Sets Sail" in 2005.