Complex sentence: Guitarist Martin Barre remembers the whole band coming up with various ideas for the music, and that some parts were recorded in a single take, with every band member having important inputs into the music, with considerable contributions from keyboardist John Evan.
Split into simpler sentences: Guitarist Martin Barre remembers the whole band coming up with various ideas for the music. Some parts were recorded in a single take, with every band member having important inputs into the music, including significant contributions from keyboardist John Evan.