Question

How were you able to identify which period does each song represent?

Answer 1

Hi, you've asked an incomplete question. However, I only answered from a general musical perspective.

Answer:

Listening to know the type of genre.

Explanation:

Usually, the period of a song is categorized as either a modern or old school song. For example, modern-day songs are often in the Hip-Hop and Rap genres. While songs in other periods (old school) are often in the Blues and Jazz genres.