My first, to hold liquid you might appropriate My second may be an agenda or a slate My whole tells you what to do before it's too late
What am I?
Bucket list
My first suggests not easy to get to Without my second, chaos may ensue My whole tells your devices what to do
My first may be accumulated or spent My second crumbles after disappointment My whole is broken so a note that was sent May be able to reach its recipient
My first will cover you all night long My second might be your favourite song My whole ensures the notes aren't made wrong
My first, a condition for business affairs My second you may choose to leave to your heirs My whole may have strangers going up your stairs