My first will cover you all night long My second might be your favourite song My whole ensures the notes aren't made wrong
What am I?
"Sheet Music".
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
My first is near an organ which thinks My second can contain your cold drinks My whole helps you to see between blinks
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
My first suggests not easy to get to Without my second, chaos may ensue My whole tells your devices what to do
My first is a creature whose breeding is unclear, My second, a price you must pay, My whole can be found in the river of Time and refers to events of today. What am I?