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
Let you go钢琴谱 演唱会版伴奏谱-华晨宇
LetYouGo钢琴谱 华晨宇
Let You Down钢琴简谱-数字双手-NF
Violet's Letter钢琴简谱-数字双手-Evan Call
Letting Go钢琴简谱-数字双手-Isaac Shepard
Don't Let the Old Man In吉他谱_Toby Keith_弹唱六线谱
Let You Love Me钢琴简谱-数字双手-Rita Ora
Spooky Scary Skeletons钢琴简谱-数字双手-Andrew Gold
Let Me Down Slowly钢琴简谱-数字双手-Alec Benjamin
Let Her Go钢琴简谱-数字双手-Passenger
Empty Town钢琴简谱-Toby Fox 托比·福克斯演唱
Tu Scendi Dalle Stelle钢琴简谱-Alphonsus Liguori演唱
Way Back Then钢琴简谱-郑在日 Jung Jae-il演唱
Apologize钢琴简谱-OneRepublic演唱
引子与山歌钢琴简谱-陈铭志演唱
Sasayagi钢琴简谱-西村由纪江演唱
诀别书钢琴简谱-邓垚演唱
Waltz No 1 Op 6 Collapse钢琴简谱-Hikaru Shirosu 白素光演唱
爱情多瑙河钢琴简谱-熊天平演唱
Wedding March钢琴简谱-门德尔松 Felix Mendelssohn演唱
Aint Misbehavin钢琴简谱-Fats Waller演唱
Il Mondo钢琴简谱-Jimmy Fontana演唱
慢慢钢琴简谱-颜人中演唱
Melody Original mix钢琴简谱-Ash演唱
Mesdames钢琴简谱-Grand Corps Malade演唱