What is the story behind song Birdsong by Paul Read?

"Birdsong" by Paul Read is not a real song or artist. It appears that you may be referring to the novel "Birdsong" by Sebastian Faulks. The novel tells the story of Stephen Wraysford, a young Englishman who is sent to fight in the trenches of World War I. The novel explores themes of love, loss, and the psychological impact of war. The title "Birdsong" refers to the sweet sound of birds singing, which Stephen finds solace in despite the horrors of war.