Help?

[onyour_mixtape]

Help me please?
So last night my boyfriend and his friend were listening to this song.
I was dumb and didn't ask the band or name

It goes something like this, I think?

I'll be with you in your dreams.
(something) about singing you to sleep.

Yeah I totally killed it,
but I have the tune stuck in my head
and I don't know the words.

HELP ME PLEASE!?????