是MADHOUSE制作的电视动画《寄生兽 生命的准则》的片头曲。《寄生兽 生命的准则》是根据日本漫画家岩明均创作的漫画《寄生兽》改编而成的电视动画，于2013年11月宣布电视动画化，作品主要描写了平凡的高中生泉新一和寄生在他体内、与其右手同化的生物“右”共存的坎坷命运。
Let Me Hear歌词：
You gotta know lonely so weep
I give that just for believe you must be all
absolute, with that doubt we do not even
You may need, and I'll miss
Maybe daylight sending flowers to myself
Thinking that someday we will be dead end
oh we should buying to see girl
May I know how fever leave
Cause feel the earth
I don’t know
He wants me is very small light
set my fire(set my fire), it’s okay (it’s okay)
and I need for flower
are you my baby when we set fire
sometimes I find they what’s going on (going on)
upside down
ああ 独りだけで
そんなに君が追いかける
だから仆ら寄り添い 生きる
煌めくまで
fall，you falling, let me fight you
you let find your love sign
love fight ,sigh for you
yeah
what we want so lets fight
一笑江湖钢琴谱-闻人听书
记忆深处钢琴谱-朴正元
如果能在一起钢琴谱-梁静茹
Suspirium钢琴谱-Thom Yorke
Pink White钢琴谱-Frank Ocean
英雄落幕钢琴谱-燃烧的音符
轻漪的节音钢琴谱-HOYO-MiX
迷宫钢琴谱-七朵花
Benedictus钢琴谱-Karl Jenkins
Everything Stays钢琴谱-Rebecca Sugar
Green Hill Zone钢琴谱-中村正人
I Like You So Much Youll Know It钢琴谱-Ysabelle Cuevas
Eyes On Me钢琴谱-植松伸夫 王菲
Lavenders Blue钢琴谱-民谣
游吟诗人言和钢琴谱-燃烧的音符