Answer:
The key of E. There are a few options for the second combination listed! 
Explanation:
If you can provide a few more chords for the second key, I can narrow it down for you. I've attached an example of the current options!
 
        
             
        
        
        
They used bright pastel colors is probably my best guess, but if that were the case I’m sure you would’ve picked that right?
        
             
        
        
        
It would most likely be A. Classical music was generally improvised at each live performance
        
             
        
        
        
Answer:
Value
Explanation:
Value is how light or dark something is, so the answer would be value :)
 
        
             
        
        
        
Can I see a picture of what need to be answered