Grey Suit là cột mốc đánh dấu sự trở lại của SUHO sau thời gian thực hiện nghĩa vụ quân sự vắng bóng làng nhạc. Đây cũng là lần comeback đầu tiên của SUHO với tư cách solo kể từ sản phẩm đầu tiên là Let's Love .

Đáng chú ý, SUHO đã tham gia vào phần viết lời để có thể bày tỏ được những cảm xúc của chính anh. Giọng hát ngọt ngào và cách hát tinh tế của SUHO làm tăng thêm sự lôi cuốn cho ca khúc này.

Lyrics:

Even grey suits have their day

All the promises they made

All the bad words you can't say

You signed up, now fake it

You signed up, now make it

You signed up, now make us proud

The best is yet to come

The best is yet to come

Seeing how they break you

Be honest, you want it nothing else will do

It's never enough for you

It's never enough for you

It's never enough for you

And even grey suits have their way

All your friendships find their graves

In the lounge where you write

They are lost and you are found

The weather's fair in the clouds

You signed up, now make them proud

The best is yet to come

The best is yet to come

The best is when you're falling from your throne

Yeah you bought it it's never enough for you

You bought it it's never enough for you

You bought it it's never enough for you

You bought it it's never enough for you

You bought it it's never enough for you

You bought it it's never enough for you

You bought it and you hold on