《La La La》的詞曲創作由山姆·史密斯（Sam Smith）本人包辦，而中文版的歌詞是由克卜勒（陳宏宇）重新填詞。英文原版歌詞如下：
(Solo: Sam Smith)
(Chorus)
La la la la la la
La la la la la la
La la la la la la
Yeah
(Verse 1)
You're a shooting star, you're making my heart skip a beat
You're a little bit crazy, you're a little bit wacky
I'm falling for you, like a ton of bricks
(Pre-Chorus)
I'm caught up in the moment, I'm feeling so weak
You're the only thing on my mind, yeah
(Chorus)
La la la la la la (Oh, oh, oh)
You don't have to be nervous (Don't be nervous)
No matter what you say or do (Don't be nervous)
You make it better, every single day
(Verse 2)
Oh, I ain't never felt this way before (Oh)
I ain't gonna lie, I hope it lasts forever (Oh)
And every single night, I'm feeling your touch (Oh)
(Pre-Chorus)
I'm caught up in the moment, I'm feeling so weak (Oh)
You're the only thing on my mind, yeah (Yeah)
(Chorus)
La la la la la la (Oh, oh, oh)
You don't have to be nervous (Don't be nervous)
No matter what you say or do (Don't be nervous)
You make it better, every single day (Every single day)
(Bridge)
La la la la la la, yeah (Yeah)
Yeah, yeah, yeah, yeah, yeah, yeah, yeah (Oh)
Yeah, yeah, yeah, yeah (Oh)
Yeah, yeah, yeah (Oh)
(Chorus) x2)
La la la la la la (Oh, oh, oh)
You don't have to be nervous (No, no)
No matter what you say or do (Oh, oh)
You make it better
Every single day
Every single day
Every single day
Every single day 耶耶耶耶耶耶耶耶耶耶 耶耶耶耶耶 耶耶耶 耶耶 耶耶 噢 噢 噢 噢 噢 噢 噢 噢 （中譯版歌詞）: 這是從天上墜落的流星，讓我心跳加速，你是如此的讓我著迷，又帶點瘋狂，你是我愛上的一個理由，像是無數的磚塊重重跌倒。此刻我已陷入其中，感到如此脆弱，你是我心中唯一的感覺。你是我每個日夜都思念的人，不管你怎樣我都愛你，每一天都讓我更美好。每當夜晚來臨，我感覺你的觸碰，這是我從未有過的感受。我將永遠不會撒謊，希望這一切永遠持續下去。每當夜晚來臨，我感覺你的觸碰，這是我從未有過的感受。每當夜晚來臨，我感覺你的觸碰，我知道你總是在我心裡，總是讓我感到更加美好。不管明天如何，今晚我要與你一起度過。每一天都讓我更美好。所以讓我們放開手心，勇敢地去愛吧！）