I want to know the answer to the following question:
What is part of the time between Passover and Shavuot thought to be?
All the background I'm provided with is that "Many Jews consider a portion of the 49-day period of the counting of the omer between Passover and Shavuot to be a time of semi-mourning and instrumental music is not allowed during that time.". Is that enough to answer the question?
Answer: yes