[Verse 1]
I wish I knew how to feel right now
Wish I knew what to say
But, every once in a while I wonder
If I subconsciously pushed you away
I put my feelings in empty bottles
Is that the wrong thing to say?
Your new love makes my heart feel hollow, hollow, hollow

[Chorus]
But, the hardest part is that I feel like I never knew ya
The hardest part is that I still can't forget about ya
Your echo goes dum-da-de-dum-do-do-day
Your echo goes dum-da-de-dum-do-do-day
Your echo goes dum-da-de-dum-do-do-day
Your echo goes dum-da-de-dum-do-do-day

[Verse 2]
Where was I for your transformation?
No more spark in your eyes
I don't want any information
But, I can't help but wonder why, oh oh (La la aye)
I can't stand it when our song comes on (La la aye)
Though it used to be my favorite one (Uh)
Don't you know you make my heart feel hollow, hollow, hollow
[Chorus]
But, the hardest part is that I feel like I never knew ya (La la la)
The hardest part is that I still can't forget about ya
Your echo goes dum-da-de-dum-do-do-day
Your echo goes dum-da-de-dum-do-do-day
Your echo goes dum-da-de-dum-do-do-day
Your echo goes dum-da-de-dum-do-do-day

[Bridge]
Oh, somehow you left me empty
Oh, you're still there in the dark
To think that I never knew ya
Oh, that is the hardest part
Oh, somehow you left me empty
Oh, you're still there in the dark
No, I can't forget about it
And that is the hardest part, oh

[Chorus]
But, the hardest part is that I feel like I never knew ya (La la la)
The hardest part is that I still can't forget about ya
Your echo goes dum-da-de-dum-do-do-day (You echo on, you echo on)
Your echo goes dum-da-de-dum-do-do-day (You echo on, you echo on)
Your echo goes dum-da-de-dum-do-do-day (You echo on, you echo on)
Your echo goes dum-da-de-dum-do-do-day (You echo on, you echo on)
[Outro]
Dum-da-de-dum-do-do-day
Dum-da-de-dum-do-do-day