Answer:
Something you carry while singing.
This dish is hot frankfurter served in a long, soft roll and typically topped with various condiments. Often served with hamburgers.
You can have it, and be at it, But it never lasts forever.
Where humans breathe liquid.
Sometimes imaginary and sometimes real, sometimes they are the closest and dearest person outside the family. Who are they?
In birth I spring forth, in life I unfold. In death I wilt and die, but rebirth restores all.