'Cause an empty room can be so loud
It's too many tears to drown them out
They mean to say hold on because an empty room can be so loud.Right?
What is them?
When it falls apart, and you're feeling lost
All your hope is gone, don't forget to
If I am not wrong, then it is referred to love.
Lyrics like poetry, are open to interpretation.
The room is loud because with no one else in there, you can only hear your own thoughts. There is no distraction
"Them" is (imo) referring to those loud thoughts.
I agree, "it" refers to (lost) love.
"Hold on", probably means, it will get better, do not give up, there will be another love and friends to help you. -- Keep on going. Carry on.
"just hold on could also be replaced by only hold on" -- sure.
'Cause an empty room can be so loud
It's too many tears to drown them out
"Them" refers to the tears, I believe. "To drown out" means to make something impossible to hear by making some other, louder noise. So, the protagonist is trying and failing to drown out his tears, i.e. the sound of him crying, by blasting music in his room, alone. Hope it makes sense.
When it falls apart, and you're feeling lost
All your hope is gone, don't forget to
"It" doesn't refer to anything in particular here. "When it falls apart" simply means "when nothing is going right for you anymore". Also, song lyrics are rarely completely grammatically correct, so don't put too much thought into them, go for the overall meaning.
