As I wrote Heir To The Gallery, I used various songs for inspiration. I even associated some of them with particular chapters, because I felt the lyrics or the mood was particularly appropriate. The soundtrack for the chapters follows.

Prologue: Across The Snowfield
"Prologue De Refrain", by Yoko Takahashi, from "Refrain: The Songs Were Inspired From ``Evangelion''"
Chapter 1: Everyday Life
"Some Might Say", by Oasis, from "(What's The Story) Morning Glory?"
"Ain't It The Life", by Foo Fighters, from "There Is Nothing Left To Lose"
Chapter 2: Ghosts Of The Past
"Touch", by Younha, from "Go! Younha!"
"Mugen Glider", by Asian Kung-Fu Generation, from "Kitsunagi Five M"
Chapter 3: Paradox Wake
"Middle Of Yesterday", by Our Lady Peace, from "Spiritual Machines"
"Boum-Boum", by Enigma, from "Voyageur"
Chapter 4: Thunder On The Doorstep
"Learn To Fly", by Foo Fighers, from "There Is Nothing Left To Lose"
"Kuuki To Hoshi", by Maaya Sakamoto, from "Lucy"
Chapter 5: Echoes
"Touched", by VAST, from "Visual Audio Sensory Theater"
"Touched", by Delerium, from "Chimera"
Chapter 6: Broken Butterfly's Wings
"Here Comes The Rain Again", by Eurythmics, from "Touch"
"Glide", by Stone Temple Pilots, from "No. 4"
Chapter 7: Homeward Bound
"Must Be Dreaming", by Frou Frou, from "Details"
"Dance With You", by Live, from "The Distance To Here"
Chapter 8: Within The Burning Leaves
"Salva Me", by Libera, from "Libera"
"Flowers Never Bend With The Rainfall", by Simon and Garfunkel, from "?"
Chapter 9: Shattered Fragments
"Truly", by Delerium, from "Chimera"
"Following The Sun", by Enigma, from "Voyageur"
Chapter 10: Someday's Return
"Nagai Yume", by YUKI, from "Wave"
"One Slip", by Pink Floyd, from "A Momentary Lapse Of Reason"
Chapter 11: Silent Enim Leges
"Touch", by Mikuni Shimokawa, from "Remember"
"Fallen", by Delerium, from "Chimera"
Chapter 12: Shackles Beyond Power
"Phenomenon", by Thousand Foot Krutch, from "Phenomenon"
"Friend Or Foe", by t.A.T.u., from "Dangerous And Moving"
"Sing Along", by Blue Man Group, from "The Complex"
Chapter 13: The Broken
"Learning To Breathe", by Nerissa Pallot, from "Fires"
"The Way You Want It To Be", by Delerium, from "Nuages Du Monde"
Chapter 14: War In The Land Of Ice
"Goodbye", by SR-71, from "Tomorrow"
"All About Us", by t.A.T.u., from "Dangerous And Moving"
"Meltdown", by Live, from "The Distance To Here"
Chapter 15: Gallery
"Voyageur", by Enigma, from "Voyageur"
"Inner Universe", by Yoko Kanno and Origa, from "Ghost In The Shell Standalone Complex OST"
"Privilege", by Balligomingo, from "Beneath The Surface"
Epilogue: Return To The Snowfield
"Forget-Me-Not", by Yuki Kajiura, from "Boogiepop: Music Inspired By Boogiepop And Others"